Rescuers still to find plane’s flight data recorder, leading to growing calls for caution in blaming co-pilot Andreas Lubitz for deliberately downing the aircraft 
 
 Forensic teams have identified 78 distinct DNA strands from body parts spread across the remote mountainside in the French Alps where Germanwings flight 4U9525 crashed, killing all 150 people on board. 
 
 Rescuers are still, however, to locate the plane’s second black box — its flight data recorder — six days after the Barcelona to Düsseldorf flight crashed into a rocky ravine at 435 miles (700km) per hour. 
 
 Between 400 and 600 body parts have been located and are currently being examined. 
 
 “We haven’t found a single body intact,” said Patrick Touron, the deputy director of the police’s criminal research institute. Identification experts were using dental records, DNA samples from family members, fingerprints, jewellery and bits of ID card to help the process. 
 
 The black box, which is actually orange and weighs around 10kg, was originally in a protective casing, but only the empty casing has been found. 
 
 Captain Yves Naffrechoux, a mountain ranger, told Agence France-Presse: “If it has not been completely destroyed or pulverised, the black box will be under the rubble and debris. We must work with caution and a lot of precision. We have to look under every last bit of plane and lift every rock.” 
 
 An access road was being built to the site to allow all-terrain vehicles to remove some of the larger parts of the plane. 
 
 Prosecutors in France and Germany have suggested that the co-pilot, Andreas Lubitz, deliberately crashed the plane. They have retrieved a torn-up sicknote from his flat in Düsseldorf, which was dated for the day of the disaster. Lubitz, who is from the small German town of Montabaur, had a history of depression which he hid from his employer and colleagues, they said. 
 
 
 
 The suicide-mass murder theory is based on the cockpit voice recorder retrieved from the crash site near the village of Le Vernet. According to Germany’s Bild am Sonntag newspaper, the captain, Patrick Sondheimer, asked Lubitz to prepare the plane to land in Düsseldorf. Lubitz responded “laconically”. Sondheimer then left the cockpit to go to the toilet, telling his co-pilot: “You can take over.” 
 
 
 
 There was a sound of a seat being pushed back, and the door clicking shut. According to Bild, the plane then went into a steady descent. Minutes later there is a loud knocking and the voice of the captain saying: “For God’s sake open the door.” In the final moments the screams of passengers can be heard. 
 
 
 
 German and European pilots’ associations urged caution last week in stating the cause of the crash until the second black box was discovered and the air accident investigation brought to a conclusion. 
 
 
 
 Jean-Pierre Michel, the head of the French investigation agency, said that some technical details of what precisely happened to the Airbus A320 aircraft were still missing. “At the moment we can’t rule out the hypothesis of a technical fault,” Michel told the French channel BFM TV. 
 
 The German chief executive of the Airbus Group, Tom Enders, expressed his irritation on Sunday and criticised TV talkshow coverage of the disaster. “There has been speculation without facts, fantasy and lies,” Enders said. Such “outrageous nonsense” mocked the victims, he added. 
 
 
 
 In Montabaur, where Lubitz lived part of the time with his father, mother and younger brother, prayers were said on Sunday for the victims of the crash, and for the co-pilot and his grieving family. Hundreds of worshippers packed into St Peter’s Catholic church on the town’s cobbled main street, on a morning of pouring rain. 
 
 
 
 Many there believed that investigators had been too quick to blame Lubitz for the disaster. Candles and flowers have been left outside the church, and one note read: “We think of all victims of this tragic crash, and their families and friends, in these difficult hours.” 
 
 The priest expressed sympathy for Lubitz’s parents whom, he said, had found themselves “at the centre of attention”, the families and friends of the victims, and the rescue workers in France. ||||| (CNN) The sounds recorded on one of the "black boxes" recovered from downed Germanwings Flight 9525 firms up investigators' theory that the co-pilot locked the captain out of the cockpit and then crashed the plane. 
 
 "For God's sake, open the door!" Capt. Patrick Sondenheimer screamed as he banged on the cockpit door, pleading with the co-pilot. 
 
 Thirteen minutes later, the plane slammed into the French Alps. 
 
 The audio from the plane's cockpit voice recorder has not been released, but the German newspaper Bild published Sunday what it claims is a summary of the transcript from the recording. 
 
 France's accident investigation agency, BEA, told CNN that the agency is "dismayed" by the voice recording leak to Bild. 
 
 Martine Del Bono, a spokeswoman for the agency, said the leak could not have come from a BEA agent. She said the agency considers the report mere "voyeurism." 
 
 According to Bild's report, Sondenheimer told co-pilot Andreas Lubitz that he didn't manage to go to the bathroom before takeoff. Lubitz tells him he can go anytime. 
 
 Lubitz is believed to have locked the pilot of Flight 9525 out of the cockpit before putting the plane on a rapid descent into the mountains, French authorities have said. 
 
 The flight took off 20 minutes late. After reaching cruising altitude, Sondenheimer asked Lubitz to prepare the landing. 
 
 Once that's finished, Lubitz again tells the captain he "can go anytime." 
 
 There is the sound of a seat being pushed backward after which the captain says, "You can take over." 
 
 At 10:29 a.m., air traffic radar detects that the plane is starting to descend. 
 
 Three minutes later, air traffic controllers try to contact the plane and receive no answer -- shortly after which an alarm goes off in the cockpit, warning of the "sink rate," Bild reported. 
 
 Next comes the banging. 
 
 Sondenheimer begs Lubitz to let him in. Passengers then begin to scream, according to the transcript obtained by Bild. 
 
 Another three minutes pass. A loud metallic bang is heard at 7,000 meters (almost 23,000 feet). 
 
 A minute and half later and 2,000 meters (about 6,500 feet) lower to the ground, an alarm says "Terrain -- pull up!" 
 
 "Open the damn door!" the pilot says. 
 
 It's 10:38, and the plane is at 4,000 meters (about 13,000 feet). Lubitz's breathing can still be heard on the voice recorder, according to Bild's report. 
 
 Two minutes later, investigators think they hear the plane's right wing scrape a mountaintop. 
 
 Screams can be heard one final time. 
 
 'Unbelievable' leak 
 
 Cockpit recordings are some of the most sensitive and closely held parts of aviation crash investigations. They're never officially released, according to CNN aviation reporter Richard Quest. 
 
 Quest called it "unbelievable" that the black box audio would be leaked in this manner. 
 
 Communications between air traffic control and a plane's cockpit can be downloaded privately, but that's less common in Europe than it is in the United States. 
 
 An edited and redacted version of the transcript is usually published in part of a final report on an incident. 
 
 Although search teams have recovered the cockpit voice recorder, the flight data recorder remains missing. That device could reveal crucial details about what happened during the final moments of the flight. 
 
 What authorities know 
 
 Jean Pierre Michel, lead investigator for the French inquiry, said on Saturday that investigators are not ruling out any scenario with respect to the crash out at this point. 
 
 But French authorities have said that Lubitz appeared to have crashed Germanwings Flight 9525 deliberately into the Alps on Tuesday as it flew from Barcelona, Spain, toward Dusseldorf, Germany, with 150 people on board. 
 
 Much attention has focused on Lubitz's state of mind since then, with suggestions that he may have had mental health issues. 
 
 Lubitz, 27, passed his annual pilot recertification medical examination in summer 2014, a German aviation source told CNN. 
 
 An official with Lufthansa, which owns Germanwings, said that the exam only tests physical health, not psychological health. 
 
 JUST WATCHED Police search Germanwings co-pilot's home for clues Replay More Videos ... MUST WATCH Police search Germanwings co-pilot's home for clues 00:10 
 
 The official also said that the company was never given any indication Lubitz was depressed, and that if he went to a doctor on his own, he would have been required to self-report if deemed unfit to fly. 
 
 A Dusseldorf clinic said he'd gone there twice, most recently on March 10, "concerning a diagnosis." But the University Clinic said it had not treated Lubitz for depression. 
 
 The speculation about Lubitz' mental state is based on a letter found in a waste bin in his Dusseldorf apartment. 
 
 The note, which was "slashed," said Lubitz was not able to do his job, city prosecutor Christoph Kumpa said Friday. 
 
 The fact that investigators found "ripped, recent medical leave notes, including for the day of the offense, leads to the preliminary conclusion that the deceased kept his illness secret from his employer and his professional environment," prosecutors said. 
 
 Germanwings corroborated that assertion, saying it had never received a sick note from Lubitz. 
 
 Anxiety, burnout and depression 
 
 A handful of publications, citing unnamed sources, have reported that Lubitz suffered from various psychological maladies. 
 
 CNN has not been able to confirm these reports. 
 
 Lubitz suffered from "generalized anxiety disorder," and from severe depression in the past, Le Parisien newspaper reported Sunday, citing sources close to the investigation. In 2010, Lubitz received injections of antipsychotic medication, the paper said. 
 
 He was also prescribed a medication that influences neurotransmitters, but it's unclear when that happened, according to Le Parisien. 
 
 The newspaper said investigators found a handful of pills in his apartment in addition to two sick notes, which forbade him from working from March 16 to March 29. 
 
 The New York Times and The Wall Street Journal, citing unnamed sources, reported Friday that Lubitz suffered from mental illness and kept his diagnosis concealed from his employer. 
 
 A subsequent report from the Times on Saturday, citing two officials with knowledge of the investigation, said Lubitz sought treatment before the crash for vision problems that might have put his career at risk. However, an official with Lufthansa, said that if Lubitz had vision problems, they would have been discovered during his pilot recertification medical examination. 
 
 Authorities have not ruled out the vision problems could have been psychosomatic, according to the Times. 
 
 Citing an unidentified senior investigator, German newspaper Die Welt said that Lubitz suffered from a severe "psychosomatic illness" and that German police seized prescription drugs that treat the condition. Lubitz suffered from a "severe subjective burnout syndrome" and from severe depression, the source told the newspaper. 
 
 News reports also stated that antidepressants were found during the search of his apartment. 
 
 Investigators are expected to question his relatives, friends and co-workers as they try to pin down what could have prompted the co-pilot to steer a jetliner full of people into a mountainside. 
 
 Lubitz had a girlfriend, a teacher at a school in Dusseldorf not far from his apartment, according to German media. 
 
 'This is a man whose life is totally broken' 
 
 Dozens of people attended a remembrance ceremony Saturday for the victims of the crash at a church in a nearby town, Digne-les-Bains, France. Most of the people on the plane were from Germany and Spain. 
 
 Relatives of the victims and local residents also gathered Saturday afternoon by a simple stone memorial set up near the crash site, in the village of Le Vernet. Flowers have been laid there, in the shadow of the snow-covered peaks of the French Alps. 
 
 The mayor of one local community said he had seen Lubitz's father on Thursday evening, describing him as "a man in deep distress." 
 
 "We get the impression that that man is bearing the whole weight of the disaster on his shoulders," Bernard Bartolini, the mayor of Prads-Haute-Bleone, said Saturday. 
 
 "I can tell that this is a man whose life is totally broken," Bartolini said. "He had so much emotion in him." ||||| (CNN) German investigators found antidepressants in the apartment of Germanwings co-pilot Andreas Lubitz this week, according to published reports. 
 
 Die Welt, a German newspaper, cited an unidentified senior investigator who said Lubitz suffered from a severe "psychosomatic illness" and German police seized prescription drugs that treat the condition. Lubitz suffered from a "severe subjective burnout syndrome" and from severe depression, the source told Die Welt. 
 
 The New York Times also reported that antidepressants were found during the search of his apartment. CNN has not been able to confirm the reports. 
 
 Investigators continued to work Saturday to piece together the secret life of Lubitz, who officials say was hiding an illness from his employers. He had been declared "unfit to work" by a doctor. 
 
 They were expected to question his relatives, friends and co-workers as they try to pin down what could have prompted the seemingly competent and stable co-pilot to steer a jetliner into a mountainside on Tuesday. 
 
 As their efforts continued, dozens of people attended a remembrance ceremony for the victims of the crash at a church in a nearby town, Digne-les-Bains. There were 150 people on board Germanwings Flight 9525, including Lubitz. 
 
 Relatives of the victims and local residents also gathered Saturday afternoon by a simple stone memorial set up near the crash site, in the village of Le Vernet. Flowers have been laid there, in the shadow of the snow-covered peaks of the French Alps. 
 
 JUST WATCHED Police search Germanwings co-pilot's home for clues Replay More Videos ... MUST WATCH Police search Germanwings co-pilot's home for clues 00:10 
 
 Mental health speculation 
 
 Much attention has focused on Lubitz's state of mind, with some media reports speculating that he may have had mental health issues. 
 
 Investigators found a letter in the waste bin of his Dusseldorf, Germany, apartment saying that Lubitz, 27, wasn't fit to do his job, city prosecutor Christoph Kumpa said Friday. The note, Kumpa said, had been "slashed." 
 
 Just what was ailing Lubitz hasn't been revealed. The New York Times and the Wall Street Journal, citing unnamed sources, reported Friday that Lubitz suffered from mental illness and kept his diagnosis concealed from his employer. 
 
 A subsequent New York Times report on Saturday, citing two officials with knowledge of the investigation, said Lubitz sought treatment before the crash for vision problems that might have put his career at risk. According to those unnamed officials, Lubitz also was being treated for psychological issues. Other media reports indicate he was treated for depression. 
 
 Lubitz passed his annual pilot recertification medical examination in summer 2014, a German aviation source told CNN. 
 
 An official with Lufthansa, which owns Germanwings, said the exam only tests physical health, not psychological health, and that if Lubitz had vision problems that would have been discovered during the tests. 
 
 "We can't believe it. If anything was wrong with his eyes during the physical exam we would have known," the official says. 
 
 The Lufthansa official also said the company was never given any indication Lubitz was depressed, and that if he went to a doctor on his own he would have been required to self-report if he had been deemed unfit to fly. 
 
 A Dusseldorf clinic said he'd gone there twice, most recently on March 10, "concerning a diagnosis." But the University Clinic said it had not treated Lubitz for depression. 
 
 German investigators said they still have interviews and other work to do before they can reveal what they gleaned from the records found in the apartment and at his parents' home in the town of Montabaur. 
 
 JUST WATCHED Prosecutor: Co-pilot hid 'illness' from airline Replay More Videos ... MUST WATCH Prosecutor: Co-pilot hid 'illness' from airline 02:40 
 
 But the fact that investigators found "ripped, recent medical leave notes, including for the day of the offense, leads to the preliminary conclusion that the deceased kept his illness secret from his employer and his professional environment," prosecutors said. 
 
 Germanwings corroborated that assertion, saying it had never received a sick note from Lubitz. 
 
 Authorities left Lubitz's apartment Friday night with boxes of papers and evidence folders after spending about 90 minutes inside. 
 
 Investigators exchange information 
 
 Dusseldorf police said Saturday that a small team of French investigators had arrived in the city and that they were sharing information. 
 
 Jean Pierre Michel, lead investigator for the French inquiry, told French TV from Dusseldorf that the French team would work in "full transparency" with their German counterparts. 
 
 "We will interview people related to the investigation in the coming days. The hearings will be conducted in the coming days and weeks," he said, according to CNN's French affiliate BFMTV. 
 
 Asked by a journalist about reports of Lubitz's possible mental illness, he replied: "The elements of the investigation are strictly confidential and we cannot address these matters today." 
 
 No scenario can yet be ruled out, including mechanical failure, "as we do not have the necessary evidence," he said. 
 
 The German tabloid newspaper Bild said Saturday it had interviewed an ex-girlfriend of Lubitz. The woman is not named in the story and CNN has not been able to verify the report independently. 
 
 According to Bild, the ex-girlfriend said Lubitz was a very nice and sensitive man who needed a lot of care and attention, and he was very troubled. She said he would get into fights with her. 
 
 The newspaper also cited the ex-girlfriend as saying that Lubitz had bad dreams that his plane was going down. 
 
 Relative names flight captain 
 
 Patrick Sondenheimer was the pilot of Germanwings Flight 9525, according to Reiner Sondenheimer of Dusseldorf, Germany, who says he is a relative of Patrick's. 
 
 Patrick Sondenheimer is the pilot believed to have been locked out of the cockpit by his co-pilot, Lubitz. 
 
 JUST WATCHED Germanwings pilot identified Replay More Videos ... MUST WATCH Germanwings pilot identified 01:38 
 
 CNN spoke to Reiner Sondenheimer at his Dusseldorf apartment. Also at the apartment was a woman who did not provide her name but said she was Patrick Sodenheimer's relative. That woman also said that Patrick Sondenheimer was on the doomed flight. 
 
 Reiner Sondenheimer declined to say anything else, other than the family wanted time to grieve. 
 
 The pilot has not been named by German authorities. 
 
 Another Germanwings pilot who once flew with Lubitz, Frank Woiton, told WDR, a local broadcaster belonging to CNN's German affiliate ARD, that his impression of Lubitz was that he was "friendly" and that there was "nothing suspicious." 
 
 Woiton also said Lubitz "was a good pilot and had a good command of the plane." 
 
 Woiton's first job after he found out about the crash was the route Dusseldorf-Barcelona-Dusseldorf -- the same route as had been taken by Germanwings Flight 9525 a day earlier. 
 
 He was praised in German media for the emotional announcement he made to passengers before takeoff, in which he said the crew, like everyone else on the plane, wanted to get home safely to their families. 
 
 Perilous recovery operation 
 
 At the scene of the crash, two helicopters were being deployed above the mountainside by recovery crews Saturday. The weather has improved after high winds Friday made their complex task even more treacherous 
 
 Lt. Col. Xavier Vialenc, a spokesman for the Gendarmerie, told CNN there were about 40 officers at the crash site Saturday. 
 
 Once at the crash site, recovery workers spend all day working there, he said. Back in Seyne-les-Alpes at the end of the day, they can see a psychologist if they choose and have a debriefing session with all the workers. 
 
 Vialenc said the operations were going well so far and that the progress made was meeting their expectations. 
 
 Yves Naffrechoux, captain of rescue operations at Seyne-les-Alpes, told CNN on Friday that rescuers have found bodies at the rugged crash site, but few of them are intact. 
 
 JUST WATCHED Investigators: Recovery effort going 'bit by bit' Replay More Videos ... MUST WATCH Investigators: Recovery effort going 'bit by bit' 02:10 
 
 It could be weeks before all the bodies are recovered, identified and released to the families, authorities said. 
 
 The mountainous terrain where the Germanwings jet went down is difficult to access. 
 
 Airline: Lubitz passed initial tests 
 
 What could have prompted Lubitz to deliberately destroy the aircraft, killing everyone on board, remains the focus of investigators in Germany. 
 
 JUST WATCHED Lufthansa CEO: Speechless that co-pilot crashed plane Replay More Videos ... MUST WATCH Lufthansa CEO: Speechless that co-pilot crashed plane 01:08 
 
 He had passed medical and psychological testing when he was hired in 2013, said Carsten Spohr , CEO of Lufthansa, which owns Germanwings. 
 
 Spohr also told reporters that Lubitz had "interrupted" his pilot training, which he began in 2008. That break lasted several months, he said, but added that such an interruption isn't uncommon. Spohr didn't give a reason for the break. 
 
 While the ailment Lubitz had sought treatment for hasn't been revealed, that he was declared unfit for work is an important detail, aviation analysts say. Pilots are required to maintain their fitness to fly and must tell their airline if they're found unfit, CNN aviation analyst David Soucie said. 
 
 Although authorities have recovered the cockpit voice recorder, the flight data recorder remains missing. It could shed crucial details about what happened inside the cockpit, authorities say. 
 
 Banging and screaming 
 
 Lubitz was the co-pilot on Tuesday's flight between Barcelona, Spain, and Dusseldorf when he apparently locked the captain out of the cockpit, then activated a control causing the plane to descend toward rugged terrain. 
 
 Germanwings said the plane dropped for about eight minutes from its cruising altitude of 38,000 feet before crashing. 
 
 The only sounds , authorities said, were those of pounding on the cockpit door, Lubitz's steady breathing and, eventually, screaming passengers. 
 
 Lubitz and 149 other people on board the plane died in an instant, authorities say. Most were from Germany and Spain.
– Investigators carrying out the grim task of recovering wreckage and human remains from the Germanwings crash say they have not found an intact body—or the flight data recorder. To aid the search, an access road is being built to the remote site in the French Alps, where forensic teams have so far recovered DNA belonging to 78 of the 150 people killed, the Guardian reports. Investigators say that so far, only the empty protective casing of the black box has been found. In other developments: Co-pilot Andreas Lubitz is believed to have deliberately crashed the plane, but with the failure to find the flight's second black box, some in the aviation world are saying it is too early to rule out other causes. Airbus chairman Tom Enders slammed TV coverage of the crash in an interview published yesterday, Deutsche Welle reports. "Sometimes people there speculate, fantasize, and lie with no basis in fact," he said, calling some of the reporting "outrageous nonsense" that was a "mockery of the victims." The cockpit voice recorder was recovered soon after the crash, and German newspaper Bild has published what it says is a leaked transcript. Capt. Patrick Sondenheimer (also spelled Sonderheimer or Sondheimer, depending on the source) can be heard pleading for Lubitz to let him back in the cabin, shouting, "Open the goddamn door!" as passengers scream minutes before impact, according to the transcript. A spokeswoman for France's accident investigation agency tells CNN that investigators are "dismayed" by the leak. Over the weekend, there were reports that Lubitz suffered from a psychomatic illness that may have been linked to a vision problem. German newspapers, including Bild, also reported that Lubitz's girlfriend, a teacher, was pregnant and the couple had planned to marry, according to the Independent. In Lubitz's hometown of Montabaur, the local Lutheran pastor tells the AP that despite mounting evidence that Lubitz caused the crash, he was still part of the community and the church is standing by his family. He says Lubitz's mother is a part-time organist for the church and he knew the co-pilot as a teenager. "This does not make sense. It is incomprehensible for me, for us, for everyone who knew her and the family," he says.