The device was unintentionally detonated by a bomb squad robot 
 
 The backpack was found in a garbage can in a nearby restaurant 
 
 FBI agents are reviewing surveillance footage 
 
 After a suspension, transit service has resumed 
 
 Explosion follows 2 other nearby weekend incidents 
 
 FBI questioning 5 people about N.Y. explosion Saturday 
 
 And Elizabeth man named as suspect in N.Y. case taken into custody 
 
 ELIZABETH -- An improvised explosive device in a backpack detonated near the Elizabeth train station early Monday as authorities were using a bomb robot to examine the item, officials said. 
 
 The blast occurred around 12:40 a.m. near Morris Avenue and Julian Place. The explosion was not a controlled blast, but happened unintentionally as the robot was cutting the device, according to Mayor Christian Bollwage. No one was injured in the blast, Bollwage said. 
 
 Authorities found five devices inside a single backpack near the train station, including one that was detonated. After the explosion, press and bystanders were moved back because the four other explosive devices inside of the backpack were still believed to be live, Bollwage said. 
 
 No other explosions were heard as of 5 a.m. 
 
 
 
 
 
 On Twitter, the FBI's Newark division described the devices as "multiple improvised explosive devices." 
 
 Earlier Sunday night, the FBI detained five people in Brooklyn for questioning related to the Saturday night explosion in Manhattan that injured more than two dozen people. 
 
 The Elizabeth incident unfolded after two men found the backpack in a waste basket on North Broad Street and Julian Place around 8 p.m. Sunday, the mayor said. 
 
 The men took the backpack "because they thought it was of some value," walked for a bit, then saw wires and a pipe, dropped the package and notified Elizabeth police, he said. 
 
 Bollwage told reporters the explosives were originally found in the trash can about 300 feet from the door of Willy's Place near the train station in the city of about 125,000, which is also the Union County seat. 
 
 "If that pub was crowded and there was a lot of people there, it could have severely injured, killed and maimed many, many people," Bollwage told reporters. 
 
 Bollwage said the Elizabeth devices did not contain a cell phone or any other electronic detonators. 
 
 After the items were found, Union County's Bomb Squad was called in and used a drone to examine the backpack, the mayor said. 
 
 "The drone indicated it could be suspicious and it could be a live bomb," Bollwage said. 
 
 When asked if he ever thought Elizabeth would be the target of such an attack, Bollwage said he was not sure the city was the intended target and that the devices could have instead been dumped by a person who realized he or she was being investigated. 
 
 "I'm not willing to admit Elizabeth is a terror target," Bollwage said. "Because of the location, it's very possible someone was trying to get rid of package as opposed to set it off." 
 
 Bollwage said FBI agents are reviewing surveillance footage from the restaurant near the trash can where the backpack was first found by the two men. 
 
 
 
 
 
 Reached after midnight on Monday morning, a spokesman for the FBI in Newark, Special Agent Michael Whitaker, said only that his agency had responded to the scene, and declined to provide any details of the investigation. 
 
 The FBI asked anyone with information to call 1-800-CALL-FBI. 
 
 Police cordoned off the station and many streets surrounding it. The investigation halted train service on the busy Northeast Corridor and North Jersey Coastline commuter rail lines. Later, officials said service would resume at 5:30 Monday, with delays expected. 
 
 Tickets and passes on both rail lines are being cross-honored on PATH along with NJ Transit and private buses, according to the transit agency. 
 
 Amtrak service was also suspended near Elizabeth, spokesman Craig Schulz said in a statement. 
 
 "We apologize to our customers for the inconvenience and will resume service as soon as it is safe to do so," the spokesman said. 
 
 Approximately 2,400 Amtrak passengers were impacted by the service suspension, the spokesman said. 
 
 "Robust security measures are in place at stations, on trains and along the tracks and Amtrak Police remain in close contact with local, state and federal partner agencies to coordinate and share intelligence information," the statement said. "At this time there are no specific or credible threats against Amtrak." 
 
 It was not immediately clear if the Elizabeth incident was linked to a bombing Saturday night in New York City that injured 29 people or another pipe-bomb style device that went off near a military charity race in Seaside Park also on Saturday. 
 
 BREAKING PHOTO: blast near Elizabeth NJ train station as bomb techs try to disarm device. Video soon. @PIX11News pic.twitter.com/doX6PgktXw -- Anthony DiLorenzo (@ADiLorenzoTV) September 19, 2016 
 
 Bomb techs from the FBI, Union County, & the New Jersey State Police have arrived on the scene and are now rendering the area safe -- FBI Newark (@FBINewark) September 19, 2016 
 
 This post will be updated as more information becomes available. 
 
 Steve Strunsky and Tom Haydon contributed to this report. 
 
 Jessica Remo may be reached at jremo@njadvancemedia.com. Follow her on Twitter @JessicaRemoNJ. Find NJ.com on Facebook. 
 
 Noah Cohen may be reached at ncohen@njadvancemedia.com. Follow him on Twitter @noahyc. Find NJ.com on Facebook. ||||| ELIZABETH, N.J. (AP) — A suspicious device found in a trash can near a New Jersey train station exploded early Monday as a bomb squad was attempting to disarm it with a robot, officials said. 
 
 Elizabeth Mayor Christian Bollwage said that the FBI was working to disarm one of five devices found in the same bag, which was discovered in a trash can by two men around 8:30 p.m. Sunday, near the Elizabeth train station on New Jersey Transit's Northeast Corridor rail line. The men had reported seeing wires and a pipe coming out of the package, Bollwage said. 
 
 There was no immediate report of injuries or damage. A message left with the FBI wasn't immediately returned. The mayor warned that other explosions were expected. 
 
 NJ Transit service was suspended early Monday between Newark Liberty Airport and Elizabeth, and New Jersey-bound Amtrak trains were being held at New York Penn Station, officials said, while New York-bound Amtrak trains were being held in Trenton. 
 
 Train passengers reported being stuck on Amtrak and NJ Transit trains for hours Sunday night, while some trains moved in reverse to let passengers off at other stations. Amtrak said 2,400 passengers were affected and that trains were being brought into other stations for people to get other transportation. It wasn't clear when the Elizabeth station would be open, a threat to cause major issues on the Monday morning commute into New York. 
 
 The discovery of the suspicious package comes a day after an explosion in Manhattan injured 29 people, and an unexploded pressure-cooker device was found four blocks away. Also Saturday, a pipe bomb exploded about an hour from the Elizabeth train station in Seaside Park, New Jersey, forcing the cancellation of a military charity 5K run. Officials said it didn't appear that those two incidents were connected, though they weren't ruling anything out. 
 
 Investigators didn't immediately comment on whether they thought the Elizabeth incident was connected to either of the two blasts. 
 
 Bollwage said that he wasn't willing to say that Elizabeth had become a target, and that it was possible that someone worried about the authorities was trying to get rid of the package. 
 
 "I'm extremely concerned for the residents of the community, but more importantly extremely concerned for everyone in the state and country where someone can just go and drop a backpack into a garbage can that has multiple explosives in it with no timers and then you have to wonder how many people could have been hurt," Bollwage said. 
 
 ___ 
 
 This story has been corrected to show that the bag was found around 8:30 p.m., not 9:30 p.m. ||||| New York (CNN) The man suspected in Saturday's bombings in New York and New Jersey was captured on Monday after a frantic manhunt and shootout. 
 
 Authorities said Rahami is "directly linked" to bombings Saturday in New York City and Seaside Park, New Jersey , and is believed to be connected to pipe bombs found Sunday night in Elizabeth, New Jersey, sources said. 
 
 "We have every reason to believe this was an act of terror," New York Mayor Bill de Blasio said Monday. 
 
 But many questions remain, chief among them, why did he do it? And, is anyone else responsible? 
 
 Ahmad Khan Rahami was wounded in a shootout with police in Linden, New Jersey. 
 
 The arrest 
 
 Rahami was captured after the owner of a bar in Linden, New Jersey, found him sleeping in the doorway of his bar Monday morning. Harinder Bains, owner of Merdie's Tavern, said he was watching CNN on his laptop from another business across the street. At first, he thought he was some "drunk guy" resting in the vestibule. Then, he recognized Rahami and called police. 
 
 "I'm just a regular citizen doing what every citizen should do. Cops are the real heroes, law enforcement are the real heroes," Bains told CNN's Anderson Cooper. 
 
 When officers responded, Rahami pulled out a handgun and opened fire, striking an officer in the chest. A foot chase ensued, during which Rahami shot at a police car, causing a bullet to graze another office in the face. 
 
 The chase ended when Rahami was shot multiple times. He was taken to a hospital for surgery. Officers Angel Padilla and Peter Hammer were taken to the hospital for treatment of non-life threatening injuries. 
 
 Officer Angel Padilla and Officer Peter Hammer. 
 
 Rahami was not initially cooperative with police who tried to interview him, a law enforcement official said. 
 
 Authorities believe the "main guy" has been caught but the investigation continues to determine if Rahami had help, sources told CNN. 
 
 Though FBI Assistant Director William F. Sweeney Jr., said there is "no indication" of an active operating cell in the New York area, evidence suggests Rahami was not acting alone, sources told CNN. 
 
 As the investigation continues, law enforcement has stressed there is no reason to believe a bomber is on the run. 
 
 The investigation 
 
 Initially, a garbage explosion at a Marine Corps charity race in Seaside Park, New Jersey, seemed to be an isolated incident. Two other unexploded bombs were found nearby and no one was wounded in the blast. 
 
 JUST WATCHED New details on explosive device at New Jersey run Replay More Videos ... MUST WATCH New details on explosive device at New Jersey run 01:42 
 
 Then came another blast Saturday night in New York's Chelsea neighborhood, injuring 29 people. As law enforcement cordoned off the area, investigators found a pressure cooker four blocks away. 
 
 Dark-colored wiring was connected by silver duct tape to what appeared to be a cell phone. Ball bearings and BBs were among pieces of metal that appeared to be packed inside, a federal law enforcement official said. A handwritten note found next to it contained ramblings, including references to previous terrorists, including the Boston Marathon bombers. 
 
 Photos: Explosion in Manhattan Photos: Explosion in Manhattan New York Mayor Bill de Blasio, right, and New York Gov. Andrew Cuomo, second right, look over the mangled remains of a dumpster Sunday, September 18, in New York's Chelsea neighborhood. An explosion injured 29 people there the night before. Hide Caption 1 of 21 Photos: Explosion in Manhattan Authorities believe the blast was caused by an explosive device in or near this dumpster. All 29 victims have been released from hospitals, according to the governor. Hide Caption 2 of 21 Photos: Explosion in Manhattan FBI agents review the scene of the explosion on Sunday morning. Hide Caption 3 of 21 Photos: Explosion in Manhattan Police officers redirect passers-by as investigations continue early on Sunday morning. Hide Caption 4 of 21 Photos: Explosion in Manhattan A fire truck at the scene of the blast on Saturday. Hide Caption 5 of 21 Photos: Explosion in Manhattan The New York Police Department's Counterterrorism Bureau tweeted this image of the crumpled dumpster following the explosion in Chelsea. Hide Caption 6 of 21 Photos: Explosion in Manhattan Just blocks away from the explosion, a suspicious device was found. Officials said the device appeared to be a pressure cooker with dark-colored wiring protruding, connected by silver duct tape to what appeared to be a cell phone. Hide Caption 7 of 21 Photos: Explosion in Manhattan De Blasio, in the blue tie, speaks at a news conference near the scene on Saturday. He was joined by New York Police Commissioner James O'Neill. Hide Caption 8 of 21 Photos: Explosion in Manhattan Police block off a road near the site of the explosion. Hide Caption 9 of 21 Photos: Explosion in Manhattan Firefighters and emergency workers gather at the scene. Hide Caption 10 of 21 Photos: Explosion in Manhattan Police officers and firefighters respond to the scene. Hide Caption 11 of 21 Photos: Explosion in Manhattan A New York police officer and his dog check a garbage can close to the scene of the explosion. Hide Caption 12 of 21 Photos: Explosion in Manhattan Two heavily armed police officers survey the scene. Hide Caption 13 of 21 Photos: Explosion in Manhattan New York police at the scene of the explosion. Hide Caption 14 of 21 Photos: Explosion in Manhattan A bomb squad vehicle arrives at the scene. Hide Caption 15 of 21 Photos: Explosion in Manhattan Police arrive at the scene of the explosion. Hide Caption 16 of 21 Photos: Explosion in Manhattan A street is blocked off nearby. Hide Caption 17 of 21 Photos: Explosion in Manhattan Police and firefighters gather near the scene. Hide Caption 18 of 21 Photos: Explosion in Manhattan A crowd gathers near the site of the explosion. Hide Caption 19 of 21 Photos: Explosion in Manhattan A line of emergency vehicles near the scene of the explosion. Hide Caption 20 of 21 Photos: Explosion in Manhattan Onlookers gather on the street. Hide Caption 21 of 21 
 
 Surveillance video shows a man believed to be Rahami dragging what appears to be a duffel bag with wheels near the site of the West 23rd Street explosion about 40 minutes before the blast, according to multiple local and federal law enforcement sources. 
 
 About 10 minutes later, surveillance video shows the same man with the same duffel bag on West 27th Street, multiple law enforcement sources said. 
 
 A device at a second location in Chelsea appears to be a pressure cooker. 
 
 In the video, the man leaves the duffel bag where police later found the unexploded pressure cooker. After he leaves, the video shows two other men removing a white garbage bag believed to contain the pressure cooker from the duffel bag and leaving it on the sidewalk, according to a senior law enforcement official and another source familiar with the video. 
 
 Investigators have not determined if those two men are connected to the man with the duffel bag, the sources said. 
 
 Rahami was identified Sunday afternoon through a fingerprint, a senior law enforcement official said. Evidence from the cell phone on the pressure cooker also led to Rahmani's identification. 
 
 A traffic stop Sunday night of five people in New York led to searches and interviews in Elizabeth, New Jersey, said Sweeney with the FBI. Rahami's last known address was in Elizabeth, the same city where the backpack with explosives was found Sunday night. 
 
 The latest bomb discovery 
 
 The backpack with five bombs inside was found in a wastebasket around 9:30 p.m. on Sunday outside a neighborhood pub in Elizabeth, about 16 miles from New York City. Two men found the backpack about 500 feet from a train trestle and alerted police, officials said. 
 
 FBI Bomb Squad is on scene and continuing the investigation at the train station in Midtown Elizabeth. pic.twitter.com/qvmzsgisjC — Chris Bollwage (@MayorBollwage) September 19, 2016 
 
 As bomb technicians deployed a robot to examine the devices, one of the bombs detonated. The remaining four were taken to an FBI laboratory at Quantico, Virginia, Elizabeth Mayor J. Christian Bollwage said. 
 
 Police checked all garbage cans in the immediate area but found no other suspicious items. 
 
 By Monday, authorities said they believed Rahami was linked to the explosion. 
 
 CNN Map 
 
 Who is the suspect? 
 
 Rahami first came to the United States in 1995 as a child, after his father arrived seeking asylum, and became a naturalized US citizen in 2011, according to a law enforcement official who reviewed his travel and immigration record. 
 
 Rahami traveled for extended periods to Afghanistan and Pakistan in the last five years, officials said. While in Pakistan in July 2011, he married a Pakistani woman. Two years later, in April 2013, he went to Pakistan and remained there until March 2014, visiting Afghanistan before returning to the United States. 
 
 Upon returning from both visits he told officials he was visiting family, satisfying any concerns immigration officials had at the time. 
 
 His family runs First American Fried Chicken in Elizabeth, the city's mayor said. The family has a history of clashes with the community over the restaurant, which used to be open 24 hours a day, Mayor Chris Bollwage said. 
 
 In 2011, the family sued the city of Elizabeth, and its police department, alleging discrimination and harassment against Muslims stemming from disputes over the restaurant's hours. Investigators searched the building on Monday, Bollwage said. 
 
 'Bigger than ever' NYPD presence 
 
 The bombings came as New York hosts world leaders at the United Nations General Assembly this week. 
 
 Heightened security across the city is common during the UNGA. But after the Chelsea bombing, Cuomo said 1,000 additional New York State Police officers and National Guard troops will be deployed to patrol bus terminals, airports and subway stations. 
 
 "You should know you will see a very substantial NYPD presence this week -- bigger than ever," de Blasio said. 
 
 Substantial police presence notwithstanding, life appears to have returned to normal, whether you call it resilience or resignation. 
 
 As President Obama said Monday, "we all have a role to play as citizens" by making sure we don't succumb to fear. 
 
 People in the region are tough and resilient, he said. 
 
 "They don't get scared," he said. "That's the kind of strength that makes me so proud to be an American. And, that's the kind of strength that is going to be absolutely critical, not just in the days to come, but in the years to come."
– A bomb squad robot was destroyed and another had its arm blown off when one of five bombs found in a backpack near a New Jersey train station blew up early Monday. The FBI says the other four devices found will be encased in blastproof material and taken to the agency's headquarters for further investigation, the New York Times reports. The devices—which were discovered by two men who found the backpack on top of a garbage can outside a restaurant near the Elizabeth station—will be closely examined for evidence linking them to explosive devices found in New York City and elsewhere in New Jersey over the weekend. A round-up of coverage: Elizabeth Mayor Christian Bollwage says the two men thought the backpack held something of value and carried it some distance before realizing it held explosive devices and calling police, NJ.com. He says in its original location near a pub, the devices could have caused carnage. "If that pub was crowded and there was a lot of people there, it could have severely injured, killed and maimed many, many people," the mayor says. The AP reports that thousands of Amtrak and NJ Transit passengers were affected by the discovery of the device, with some stuck on trains for hours. Service has resumed but passengers in the area have been warned that they can expect delays Monday. NBC New York reports that investigators believe surveillance video shows the same man at two locations where explosive devices were found in Manhattan. Police aren't sure whether there is a link between the New York devices and those found in New Jersey. CNN reports that there is now an increased security presence in New York City not just because of the bombs, but because world leaders are gathering for the United Nations General Assembly. A law enforcement source tells CBS that investigators believe cell phones were used as triggers for both the Manhattan blast—which NY Gov. Andrew Cuomo calls "obviously an act of terrorism"—and the device that exploded before a New Jersey race to benefit Marines and sailors early Saturday. It's not clear whether a trigger was found with the Elizabeth devices. Bollwage says he's not sure his city was targeted. He suspects somebody may have just dumped the devices in Elizabeth, but he is "extremely concerned for everyone in the state and country where someone can just go and drop a backpack into a garbage can that has multiple explosives in it with no timers and then you have to wonder how many people could have been hurt." An official close to the investigation tells Reuters that all the devices involved have been crude and the level of planning appears low—but some investigators fear this was just a test. "That's what worries us," he says. "Was this some kind of test run, not just of the devices, but also of the surveillance in New York and the response?" (The FBI says it is questioning five people found in a "vehicle of interest.")