You will be given a definition of a task first, then some input of the task.
In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.

Accused cop-killer Tremaine Wilbourn surrendered to the U.S. Marshals Monday afternoon, ending an intense two-day manhunt by both local and federal authorities. 
  
 Accompanied by a lawyer as well as family members, Wilbourn walked into the federal building Downtown a little after 4:30 p.m. Heavily armed U.S. Marshals blocked off part of Front Street outside the federal building during the surrender. 
  
 Wilbourn, 29, was later taken to 201 Poplar to be interviewed by Memphis Police Department detectives. He is expected to make his first court appearance Tuesday morning and is expected to be charged with first-degree murder. 
  
 “You have to understand, this has been an exhaustive search, both physically and mentally. This has been an around-the-clock investigation,” Memphis Police Director Toney Armstrong said. “I think he felt the walls closing in and felt it was in his best interests to turn himself in.” 
  
 Added Mayor AC Wharton: “(Police) worked around the clock to keep the pressure on, to let the suspect know there was no hiding place, that we were not going to relent in any way, making it an imperative that he did what he needed to do.” 
  
 Wilbourn is accused of shooting Officer Sean Bolton Saturday night in the 4800 block of Summerland Avenue in Parkway Village. 
  
 Bolton, who would’ve turned 34 this week, pulled in front of a red 2002 Mercedes-Benz that was stopped on the side of the street, police have said. Bolton got out of his squad car and approached that car, police said, but the passenger got out and a struggle ensued. 
  
 Police say that Wilbourn pulled out a gun and fired multiple shots into Bolton at close range. Police later found drug paraphernalia as well as 1.7 grams of marijuana in the Mercedes. 
  
 A man who lives in the neighborhood picked up Bolton’s police radio and called dispatchers for help. Bolton was rushed to the Regional Medical Center in critical condition but did not survive. 
  
 “I think you have an individual who went above and beyond to demonstrate that he’s a violent individual,” Armstrong said. “He committed a bank robbery and I think he’d committed a robbery prior to that. All the signs were there.” 
  
 Armstrong said he went to homicide to talk to Wilbourn after he was brought in. 
  
 “I asked him that, ‘Are you okay? Is everything okay?’ And he said yes,” Armstrong said. 
  
 “He wanted to make it a point to say, ... “I want you to know that I am not a cold-blooded killer and I am not a coward,” Armstrong added. “If you remember, I called him a coward in a press conference and that did not sit too well with him.” 
  
 A reward of up to $50,000 was raised for Wilbourn’s arrest, but it’s unclear what will become of that now. Wharton said there were legal issues to be sorted out. 
  
 Wilbourn was on supervised release after a conviction for robbing the Friendship Bank in Covington in 2005. 
  
 On June 15 of that year, Wilbourn and his uncle, Adam Mackey, then 34, hit the bank and netted $2,000. At the time of the arrest, police said the pair dropped more than $7,500 as they tried to flee the scene. Wilbourn, who was 19 at the time, was sentenced to 10 years and one month in jail. The duo was ordered to repay the $2,000, plus $200 in court fees, which they did in March, according to their plea agreement. 
  
 Wilbourn was released from prison on July 1, 2014, after serving nine years. He was placed on probation for the robbery for three years. 
  
 Armstrong said he met with Bolton’s family Sunday, then called them Monday to tell them of the arrest. 
  
 “As you can imagine, they were relieved,” he said. “Certainly this is part of the healing process. It’s a long process, not only for the Bolton family but for the MPD family as well. This is just ones step in the healing process.” 
  
 Staff reporter Yolanda Jones contributed to this story. ||||| To help personalize content, tailor and measure ads, and provide a safer experience, we use cookies. By clicking or navigating the site, you agree to allow our collection of information on and off Facebook through cookies. Learn more, including about available controls: Cookies Policy ||||| MEMPHIS, Tenn. (AP) — The latest on the fatal shooting of a police officer in Memphis, Tennessee (all times local): 
  
 5:30 p.m. 
  
 The ex-con accused of killing a Memphis police officer has turned himself into federal authorities, ending an intensive two-day manhunt. 
  
 Louis Goggans, spokesman for the United States attorney's office in Memphis, said Tremaine Wilbourn turned himself over at the federal building. His family was with him when he arrived. 
  
 A warrant was issued Sunday for his arrest on a charge of first-degree murder. 
  
 Wilbourn is accused of shooting Officer Sean Bolton Saturday night when the officer interrupted a drug deal. 
  
 A news conference is scheduled later this evening. 
  
 ___ 
  
 5:10 p.m. 
  
 After a two-day manhunt for an ex-con accused of gunning down a Memphis Police officer, city officials cited a "material development" in the case and cancelled a news conference to announce an increased reward for his capture. 
  
 Memphis city spokeswoman Dewanna Smith said reporters will be advised later about the development. 
  
 Officer Sean Bolton was shot Saturday night when he interrupted a drug deal in a Mercedes Benz. 
  
 Police have since been looking for a 29-year-old convicted bank robber named Tremaine Wilbourn. Police had been seeking him on a warrant charging him with murder. 
  
 Officials had called a press conference for Monday night to announce an increase in the reward for information leading to his capture. But the city canceled it minutes before it was to begin. |||||
Output:
The suspected killer of a Memphis cop has turned himself in and ended an intensive two-day manhunt, the Memphis Commercial Appeal reports. Officials were close to increasing the $10,000 reward money for information leading to his arrest when Tremaine Wilbourn, 29, turned himself in at the federal building in Memphis with his family, says the AP. A warrant had been issued yesterday on a first-degree murder charge. The officer who died, 33-year-old Sean Bolton, apparently came upon a drug deal Saturday night when he was killed. According to police, Bolton saw a car with another car stopped in front of it illegally and approached the vehicles, CNN reports. A passenger then confronted Bolton, and after a struggle Bolton was shot several times; he later died in a hospital. The suspect and driver both fled the scene. USA Today reports that a police director yesterday branded Wilbourn a "coward," saying he had murdered "a police officer for less than two grams of marijuana. You've literally destroyed a family." Today, reactions are relatively upbeat: "Great job to all involved in putting the pressure on. He turned himself in," posted Shelby County Sheriff Bill Oldham on Facebook. "I will continue to pray for Officer Bolton's family, and all of his extended family. Thanks to my crew for working on this as well."