Detailed Instructions: In this task, you are given a text of many news articles seperated by special token "|||||". Your task is to summarize them.
Problem:Prosecutors have released video footage of Trayvon Martin buying sweets and a drink in a Florida convenience store minutes before he was shot and killed in a confrontation with a neighbourhood watch leader. 
  
 The scenes recorded at the 7-Eleven close to the Retreat at Twin Lakes development in Sanford show Martin, 17, wearing a black hooded top and beige trousers, walking up to the counter and paying. 
  
 Soon after leaving the shop Martin got into a fight with George Zimmerman, who had already called police to report a "suspicious" black male in the neighbourhood. Martin was shot dead by a single shot to the chest at point-blank range, the gunshot heard on recordings of several 911 calls made by neighbours. 
  
 The video is among the latest in a batch of evidence released on Friday by prosecutors who have charged Zimmerman, 28, with second-degree murder. 
  
 It represents the first public glimpse of the unarmed teenager on 26 February, the night he was killed in an incident that led to race protests and the resignation of the local police chief. The Sanford police department originally released Zimmerman without charge after he claimed he acted in self-defence, and he was arrested in April only after the appointment of a special prosecutor to re-examine the evidence. 
  
 The haul of evidence released by state attorney Angela Corey's office over the last two days includes a toxicology report that showed Martin had traces of marijuana in his system, medical records confirming bloody injuries to Zimmerman's head, and testimony by Martin's father that it was not his son's voice heard on 911 recordings crying for help. 
  
 Additionally, there were numerous witness statements, many contradicting each other over such details as how many shots were fired and which of the two was on top of the other during their fight. And one police report reveals that detectives wanted to charge Zimmerman with manslaughter even after Bill Lee, then the chief of the Sanford police department, had told reporters there was insufficient evidence to justify such a charge. 
  
 The confrontation was "entirely avoidable", detective Chris Serino wrote, if Zimmerman had returned to his car or engaged Martin in conversation. 
  
 Among the various audio recordings of interviews with witnesses is one of a teenage girl in Miami, where Martin lived, who told prosecutors she was on the phone to her friend and heard Zimmerman approach him. 
  
 The girl, whose identity has not been revealed, said she heard Martin say: "Why you following me for?" 
  
 She said: "I hear this man, like this old man, say, 'What are you doing around here?'" then said she heard a bumping sound followed by what she thought was a scuffle. 
  
 "I could hear it a little bit, 'Get off, get off,' then the phone just hung up," she said. 
  
 Zimmerman faces at least 25 years in jail if he is convicted. No date has yet been set for the trial and he remains free on $150,000 bail. 
  
 His lawyer, Mark O'Mara, warned on Friday it would be a mistake to draw any conclusion from the partial evidence so far released. "Looking at it piecemeal is what has caused some of the problems in the past with the case," he said in an interview with CBS News. 
  
 "It's sort of important that we all wait until all the evidence is out. Let's deal with it all once we have it, and deal with it in the courtroom." ||||| The recording is one of several dozen released by State Attorney Angela B. Corey, who has charged the gunman, George Zimmerman, 28, with second-degree murder. It is part of the discovery material made public this week that also includes hundreds of pages of documents and photographs. Mr. Zimmerman has pleaded not guilty. 
  
 Mr. Zimmerman was a neighborhood watch volunteer at the gated community called Retreat at Twin Lakes, in Sanford, Fla., where the shooting took place. He suffered a broken nose, black eyes, cuts to the back of his head and back pains, all of which he said were the result of a struggle with Mr. Martin, who was unarmed. 
  
 Mr. Zimmerman has told the police that he saw a suspicious teenager roaming around the Retreat and followed him on foot before losing sight of him. As Mr. Zimmerman was walking back to his vehicle, he told investigators, Mr. Martin emerged and punched him in the nose before jumping on top of him and attacking him. Mr. Zimmerman said that he then shot Mr. Martin to save his own life. 
  
 Mr. Zimmerman’s lawyer, Mark O’Mara, said he was unable to discuss specific evidence. But he said the claims from Mr. Martin’s friend “make up one piece of evidence in the case and that it has to be taken within the context of all the other evidence.” 
  
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 In the taped interview with a state prosecutor, the girl said that Mr. Martin, after evading Mr. Zimmerman for a while, noticed that he was being pursued again and mentioned this to her. 
  
 A sense of urgency grew. Mr. Martin alerted the girl to the fact that Mr. Zimmerman “was getting close to him.” She strongly urged him to run, but she could tell he did not because he was out of breath and tired, and kept saying he was close to the town house where he was a guest. 
  
 The girl, who talked with Mr. Martin several times that evening, told the investigator that she then heard Mr. Martin ask, “Why are you following me for?” She heard the other man ask, “What are you doing around here?” Earlier, Mr. Martin had temporarily sought cover from the rain by one of the buildings. 
  
 After calling out “Trayvon” several times over the phone, and getting no response, she heard somebody bump Mr. Martin. 
  
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 Subsequently she heard him utter what sounded like, “Get off, get off.” Then the call ended. 
  
 Several weeks after Mr. Martin’s death, his father, Tracy, discovered that his son had been talking to the girl just before he was shot. He learned this by reviewing Mr. Martin’s phone bills. She was subsequently interviewed by the Martin family’s lawyer, Benjamin L. Crump, but not by the Sanford police. 
  
 One police document contained in the discovery concluded, “The encounter between George Zimmerman and Trayvon Martin was ultimately avoidable by Zimmerman, if Zimmerman had remained in his vehicle and awaited the arrival of law enforcement, or conversely if he had identified himself to Martin as a concerned citizen and initiated dialogue in an effort to dispel each party’s concerns.” 
  
 It added, “There is no indication that Trayvon Martin was involved in any criminal activity at the time of the encounter.” |||||
Solution:
Next up in the Florida prosecutors' evidence dump in the Trayvon Martin case: video, of Trayvon at the 7-Eleven, minutes before he was killed, reports the Guardian. The video shows Trayvon dressed in his hoodie and light-brown trousers, buying candy and a drink. He got into the altercation with George Zimmerman soon after leaving the store. Prosecutors also released a recording of an interview with the girl Trayvon was talking to on the phone that night, and she said he complained that a "crazy and creepy" man was watching him from a car and then following him on foot, reports the New York Times. She heard Trayvon ask the man why he was following him. Then, "I hear this man, like this old man, say, 'What are you doing around here?'" before an apparent scuffle started. "I could hear it a little bit, 'Get off, get off,' then the phone just hung up," she said.