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:A source close to the Lanza family tells NBC News that Connecticut school shooter Adam Lanza had cut off communication with his father, Peter Lanza, and refused to see him. NBC's Jeff Rossen reports. 
  
 We've heard a lot about Adam Lanza and his mother, but now we have new information about his relationship with his father, Peter. A source close to the family told NBC News that Adam had cut off communication with his father, refusing to see him. 
  
 In the chaotic hours after Adam Lanza's rampage, a local reporter showed up at his father's doorstep to break the news. "His expression twisted from patient, to surprise, to horror," said Maggie Hogan of the Stamford Advocate. "It was the first time that he considered a loved one could be involved." 
  
 Peter Lanza is a successful finance executive at GE, part owner of NBC Universal. A source close to the family said that in 2001, he separated from Adam's mother, Nancy, but he still saw Adam every week. In 2009, the Lanzas officially divorced, when Adam was 17. 
  
 Martha Lanza, Adam's aunt, said: "They were the type of parents, even when they were married, even as well as being separated, if the kids had the need, they would definitely fill it." 
  
 But the source close to the Lanza family said that by 2010, Peter Lanza was dating a new woman, whom he later married, and Adam suddenly cut his dad off, despite his father's attempts to see him. Peter Lanza hadn't seen or heard from his son since then. 
  
 Now NBC News has obtained the divorce documents between Adam's parents. Peter and Nancy agreed on joint legal custody of Adam. He lived full-time with his mom, in a spacious Connecticut home. And Adam's dad was fully supporting them, with hefty monthly payments: this year, more than $289,000 in alimony. Peter also volunteered to pay for Adam's college, car and medical insurance. 
  
 "This was a very friendly divorce," said Connecticut divorce attorney Eric Broder. "The parties represented themselves, and they seemed to reach an agreement that they both found fair and equitable. I would take 10 clients like this any day, nice and easy." 
  
 According to their divorce mediator, Adam's parents were concerned about his needs, and Nancy didn't like to leave him alone. The source close to the family told NBC News that Adam's father never saw any violent behavior from him. 
  
 "When the parents divorce, those children feel lost," said Jeff Gardere, psychologist and NBC News contributor. "There is an impact on every child who is part of that divorce. They can feel guilty. The foundation that they've had in their lives, the stability is now being torn asunder." 
  
 Right now, no one knows what caused Adam's violent spiral. His father hasn't spoken publicly, just releasing a statement saying that he can't comprehend what has unfolded; he's saddened and struggling to make sense of it, and he's cooperating fully with law enforcement. 
  
 More: ||||| The gunman who slaughtered 20 children and six adults at a Connecticut elementary school may have snapped because his mother was planning to commit him to a psychiatric facility, according to a lifelong resident of the area who was familiar with the killer’s family and several of the victims’ families. 
  
 Adam Lanza, 20, targeted Sandy Hook Elementary School in Newtown after killing his mother early Friday because he believed she loved the school “more than she loved him,” said Joshua Flashman, 25, who grew up not far from where the shooting took place. Flashman, a U.S. Marine, is the son of a pastor at an area church where many of the victims' families worship. 
  
 “From what I've been told, Adam was aware of her petitioning the court for conservatorship and (her) plans to have him committed," Flashman told FoxNews.com. "Adam was apparently very upset about this. He thought she just wanted to send him away. From what I understand, he was really, really angry. I think this could have been it, what set him off.” 
  
 A senior law enforcement official involved in the investigation confirmed that Lanza's anger at his mother over plans for “his future mental health treatment” is being looked at as a possible motive for the deadly shooting. 
  
 "He thought she just wanted to send him away. From what I understand, he was really, really angry." - Joshua Flashman, Newtown resident familiar with Lanza family 
  
 Flashman was told Nancy Lanza had begun filing paperwork to get conservatorship over her troubled son, but that could not be confirmed because a court official told FoxNews.com such records are sealed. The move would have been necessary for her to gain the legal right to commit an adult to a hospital or psychiatric facility against his will. A competency hearing had not yet been held. 
  
 Adam Lanza attended the Sandy Hook School as a boy, according to Flashman, who said Nancy Lanza had volunteered there for several years. Two law enforcement sources said they believed Nancy Lanza had been volunteering with kindergartners at the school. Most of Lanza's victims were first graders sources believe Nancy Lanza may have worked with last year. 
  
 Flashman said Nancy Lanza was also good friends with the school’s principal and psychologist—both of whom were killed in the shooting rampage. 
  
 "Adam Lanza believed she cared more for the children than she did for him, and the reason he probably thought this [was the fact that] she was petitioning for conservatorship and wanted to have him committed," Flashman said. "I could understand how he might perceive that—that his mom loved him less than she loved the kids, loved the school. But she did love him. But he was a troubled kid and she probably just couldn’t take care of him by herself anymore." 
  
 The Washington Post reported that the distraught mother had considered moving with her son to Washington state, where she had found a school she thought could help him. Either way, according to Flashman, Nancy Lanza was at her wit's end. 
  
 A separate neighborhood source also told FoxNews.com that Nancy Lanza had come to the realization she could no longer handle her son alone. She was caring for him full-time, but told friends she needed help. She was planning to have him involuntarily hospitalized, according to the source, who did not know if she had taken formal steps. 
  
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 Multiple sources told FoxNews.com Adam Lanza suffered from Asperger’s syndrome, a form of autism, and unspecified mental and emotional problems. 
  
 Adam Lanza has also been described by those who knew him as highly intelligent, and a spokesman for Western Connecticut State University told The Associated Press he took college classes there when he was 16, earning a 3.26 grade point average and excelling at a computer course. 
  
 Alan Diaz, 20, who was friends with Adam Lanza at Newtown High School, said the Lanza he knew was ill-at-ease socially, but not a monster. 
  
 "He was a wicked smart kid," Diaz told FoxNews.com by email. "When I first met him, he wouldn't even look at you when you tried to talk to him. Over the year I knew him, he became used to me and my other friends, he eventually could have full conversations with us. 
  
 "I've heard him laugh, he has even comforted me once in a hard time I had," Diaz said. “A big part of me wishes I never dropped contact with him after he left high school, felt like I could have done something." 
  
 Flashman said nobody will completely understand why Adam did what he did. 
  
 “No one can explain Adam Lanza besides God and Adam Lanza, and I don’t even think Adam Lanza could explain Adam Lanza, to be honest with you.” ||||| What was the 52-year-old mother of the shooter really like? According to some, Nancy Lanza was a survivalist monster who relished teaching her son how to use guns, but to some of her closest friends, that is totally inaccurate. 
  
 “She was a wonderful, beautiful, elegant woman who loved life,” Russ Hanoman, said, ” and most importantly she loved her son, Adam.” 
  
 Hanoman met Nancy Lanza six years ago at My Place, a popular bar and restaurant in the heart of Newtown. He described himself as a close friend of Nancy Lanza’s. As far as he knew, Lanza had no connection to Sandy Hook Elementary School. Having retired from the financial world and gotten a good settlement in her divorce from Peter Lanza in 2009, she was a stay-at-home mom who worried about her younger son, Adam. 
  
 “He was clearly troubled. He did have issues. He was not violent in any way,” Hanoman said. “He was a vegan because he didn’t want to hurt animals.” 
  
 As for the weapons Nancy Lanza legally kept at home, including a Glock, a Sig Sauer and a Bushmaster, another friend said shooting guns was just a recreational sport for her, not a way to protect herself. 
  
 “Nancy was not afraid of living alone in a large house,” Ellen Adriani, another close friend said. “I used to visit her there. She had guns. She used to go with other friends of ours and go shooting.” 
  
 As for what lessons can be learned from this horrific shooting, Nancy Lanza’s friends say more attention must be paid to mental health issues. 
  
 But for now, Hanoman said they are “just numb.” |||||
Solution:
Investigators have yet to offer a motive for Adam Lanza's deadly rampage, but a Newtown resident offers one theory to Fox News: Lanza lost it because his mother planned to commit him against his will. Joshua Flashman, the son of a Newtown pastor, says he has been told that Nancy Lanza was petitioning the court to get conservatorship over her son so she could then send him to a mental institution, and Adam was "really, really angry" about it. "I think this could have been it, what set him off.” Another resident tells Fox a similar story; police say only that Nancy's plans for "his future mental health treatment" are being reviewed in the search for a motive. Other recent revelations: Though most reports say she had no ties to Sandy Hook Elementary, Flashman says Nancy Lanza volunteered with kindergartners there last year. Adam may have believed that "his mom loved him less than she loved the kids, loved the school," he says. The shooter cut off all ties with his father, Peter Lanza, in 2010, following his parents' 2009 divorce, a source tells NBC News. The couple separated—apparently amicably—in 2001, and Adam saw his father every week in the ensuing years. The source says Peter hadn't seen or heard from his son since 2010. A close friend of Nancy's told PIX 11 that Adam was a vegan ... because he "didn’t want to hurt animals." Click for more details about Adam Lanza.