Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Input: (CNN) Police say they have a confession from a Texas Border Patrol agent they suspect of being a serial killer, but many loose ends and questions remain -- chiefly, whether prosecutors will seek the death penalty. 
  
 It could take as long as 90 days to determine whether prosecutors will pursue capital murder charges against Juan David Ortiz, 35, accused of killing four women in and around the border town of Laredo, Texas, Webb County District Attorney Isidro Alaniz said during a Monday news conference. 
  
 Another loose end: Are there more victims? 
  
 Melissa Ramirez, 29, was the first victim linked to Juan David Ortiz, police say. 
  
 Asked by a reporter if he was certain they had identified all of Ortiz's victims, Chief Deputy Federico Garza of the Webb County Sheriff's Office replied, "We're not confident (of) that, sir." 
  
 He added, "We will do historical research everywhere that he has been to see if we have a pattern of victims." 
  
 Read More ||||| In the end, Mr. Ortiz appeared to have become suicidal, the authorities said. As officers were closing in, he ran to the third floor of a hotel parking garage and tried to use a parked pickup truck as a shield. He flashed his phone at the officers surrounding him, the authorities said, and they concluded he was trying to make it appear that he was holding a weapon. 
  
 Image Juan David Ortiz Credit Webb County Sheriff’s Office, via Associated Press 
  
 “Suicide by cop,” explained Federico Garza, the chief deputy for the Webb County Sheriff’s Office. 
  
 Mr. Ortiz was taken into custody without any shots fired, and subsequently admitted to the killings and the attack on the woman who escaped, the authorities said. 
  
 Deputy Garza was asked if he was confident that investigators would not find more victims. “We know that it’s still an ongoing investigation,” he said, “and we will do historical research everywhere that he has been to see if we have a pattern of victims such as this.” 
  
 A city of 260,000 people about 145 miles southwest of San Antonio, Laredo is the busiest truck crossing on the Mexican border, but it sees less undocumented immigrant traffic than do McAllen and Brownsville, further southeast. Restaurant chains and strip malls line the roadways. Scores of colonias — small, unincorporated communities of substandard housing that often lack basic services — dot the outskirts of the city. 
  
 Mr. Ortiz’s arrest has thrust Laredo into the national spotlight, exposed its underbelly and tested the relationship between residents and the thousands of Border Patrol agents who live and work in South Texas. In large swaths of the nearby brush, Border Patrol agents are some of the only visible symbols of the law, and in the urban heart of Laredo and other cities, President Trump’s focus on border enforcement has given them expanded political clout. 
  
 Officials said that they do not believe Mr. Ortiz attacked the women while he was on duty or used his government vehicle in committing the crimes. None of the victims were undocumented immigrants; all appeared to be American citizens from the Laredo area. But the authorities said they are looking at his service revolver as a possible murder weapon. 
  
 At least two of the bodies were found along stretches of Interstate 35, which cuts through Laredo and is one of the main traffic arteries along this part of the border. Mr. Ortiz knew every mile of Interstate 35 as part of the Border Patrol’s Highway Interdiction Team, which intercepts vehicles on the interstate suspected of engaging in drug trafficking and human smuggling. 
  
 In 2015, a federal appellate judge in the United States Court of Appeals for the Fifth Circuit described why the court found Mr. Ortiz’s testimony credible in a case involving a traffic stop he made on Interstate 35 in 2013. “Agent Ortiz has spent countless hours observing traffic patterns on Interstate (IH) 35, and has experience investigating human and narcotics trafficking,” the judge wrote. ||||| This image provided by the Webb County Sheriff’s Office shows Juan David Ortiz, a U.S. Border Patrol supervisor who was jailed Sunday, Sept. 16, 2018, on a $2.5 million bond in Texas, accused in the killing of at least four women. Ortiz was nabbed early Saturday after a string of violence against female sex workers in Laredo, Texas, where he is a supervisor with the Border Patrol. (Webb County Sheriff’s Office via AP) ORG XMIT: NYAG710 (Photo: AP) 
  
 LAREDO, Texas – The Border Patrol agent who allegedly went on a killing spree this month is a former Navy corpsman who led a quiet, suburban life with a wife, children and respected job. 
  
 But Juan David Ortiz, 35, also wished to "eradicate all the prostitutes" and befriended sex workers before allegedly shooting them execution-style and dumping their bodies in rural areas, law enforcement and county officials said. 
  
 Police are still trying to determine what exactly triggered Ortiz to allegedly launch the spree that left four people dead in this border city. He's been charged with four counts of murder and one count of aggravated assault with a deadly weapon. 
  
 Authorities have named Melissa Ramirez, 29, Claudine Ann Luera, 42, and Humberto Ortiz, 28, as the victims. A fourth victim was not named. All died between Sept. 3 and Sept. 15, their bodies found within miles of one another. 
  
 "It's difficult to get into the mind of a killer," Webb County District Attorney Isidro Alaniz said Monday at a press conference. "But what we have right now and what we do know is that Ortiz carried out these murders in a cold and callous way." 
  
 Police said Ortiz confessed to the killings and pointed police to the bodies. Investigators are still looking into what may have turned the 10-year Border Patrol agent to alleged homicide. But, during interviews, the suspect told investigators about his disdain for Laredo's sex worker community, said Webb County Judge Tano Tijerina, the county's top executive. 
  
 Asked what he hoped to accomplish with the alleged killings, Ortiz told investigators: "To eradicate all the prostitutes." 
  
 Ortiz served in the Navy from 2001 to 2009, earning the rank of second-class hospital corpsman, according to U.S. Navy public affairs. He did his basic training in Illinois and served at a variety of bases during his time in the service, including at the Navy Medical Training Support Center at Fort Sam Houston in San Antonio. He also received a Rifle Marksmanship Ribbon during his tenure. 
  
 Ortiz earned a Bachelor's degree from American Military University and later a Master's degree from St. Mary's University in San Antonio, according to court records. He joined U.S. Customs and Border Protection in 2009, working with the agency in San Antonio, Cotulla and Laredo, eventually rising to intel supervisor. 
  
 But his seemingly normal life in Laredo was underscored with repeated encounters with sex workers on San Bernando Avenue in Laredo. Ortiz befriended the workers who congregate on the street, putting them at ease before driving them to remote areas and killing them with bullets to the head, according to arrest affidavits. 
  
 As the bodies were found and police began noticing similarities in the shootings, Ortiz used his position as intel supervisor to monitor leads in the investigators and avoid arrest, Tijerina said. 
  
 At one point in the investigation, police were mistakenly looking for a black Cadillac sedan – not the white pickup Ortiz owned, he said. 
  
 "He was being given all the intel and he knew they weren’t looking for him," Tijerina said. 
  
 Emboldened, Ortiz continued socializing with the sex workers, gaining their confidence to lure them into his truck. "He had entrusted his victims to come along with him several times," Webb County Sheriff’s Office Chief Federico Garza said. "He knew the victims, and the victims knew him." 
  
 The spree began to unravel Friday, when one of his alleged victims managed to escape from his truck and flag police. Members of the Webb County Sheriff's Office SWAT team and Texas Department of Public Safety troopers cornered Ortiz hours later in the bed of a pickup truck on the third floor of a hotel parking garage. 
  
 Garza said investigators were still working on a personality profile of Ortiz to determine why he allegedly did it, but that, during interviews, the suspect voiced "dislike" for the sex worker community. "Whatever anger he had inside of him, we don’t know yet," he said. 
  
 Border Patrol officials said Ortiz only had a "minor" disciplinary mark on his record at the agency. 
  
 "There was nothing in his background certainly that would have alerted CBP or have indicated Mr. Ortiz was capable of anything like this," said Juan Benevides, special agent in charge of the Border Patrol's office of special responsibility in Houston. 
  
 Whatever his motives, Ortiz would have kept killing if given the chance, Tijerina said. 
  
 "I think he would have done a lot more serious harm," he said. "If it wouldn’t had been for that girl that escaped, we would still be looking for our guy with more dead bodies." 
  
 Follow Jervis on Twitter: @MrRJervis 
  
 USA TODAY writer Alan Gomez and Chris Ramirez of The Corpus Christi Caller-Times contributed to this report. 
  
 Read or Share this story: https://usat.ly/2Nlrguf |||||
Output:
A Border Patrol agent accused of killing four women over 12 days wanted "to eradicate all the prostitutes," authorities in Laredo, Texas, tell USA Today, and they're not ruling out the possibility of more victims. The bodies of two women had already been found when 35-year-old Juan David Ortiz arrived at a gas station with a third woman around 9pm Friday. She ran to a state trooper for help, while Ortiz took off. He's alleged to have killed two more women before authorities found him at another gas station around 1am Saturday, per CNN. Ortiz ran to a hotel parking garage and tried to use his phone to suggest he had a weapon, but was arrested without incident, says Federico Garza of the Webb County Sheriff’s Office, per the New York Times. Authorities say Ortiz may have used his service weapon to kill the "vulnerable" women—all US citizens—with drug or alcohol problems or ties to prostitution. Ortiz allegedly befriended sex workers before shooting them each in the head. The killing spree began Sept. 3 with the fatal shooting of Melissa Ramirez, 29, found near Texas Highway 255 in northern Laredo. Last Thursday, the body of Claudine Luera, 42, was found along the same highway just two miles east. Shortly thereafter, the bodies of a 28-year-old transgender woman and a fourth unidentified victim were discovered separately along Interstate 35, which Ortiz knew well as part of the Border Patrol's Highway Interdiction Team. "We're thinking that maybe he was preying on them … [thinking] no one's going to wonder if they go missing," Luera's sister tells the Times. Battling a heroin addiction, Luera "was loved by her family and her friends," she says. "She didn't deserve to die like this." Garza says officials plan to look for other victims "everywhere that [Ortiz] has been."