But the painfully shy young man had taken the divorce badly."The kids seemed really depressed" by the break-up, said Ryan Kraft, 25, who stayed with Adam when Mrs Lanza went out. "They were much more than the average kid [had]." Mr Lanza's lawyer Gary Oberst said: "He was very upset that he was getting divorced, but he didn't want to take it out on anybody. When he came in to consult with me, I said 'This is what your obligation is.' And he said: 'That's not enough."As horrible as this was, I can't say I am surprised." "This was a deeply disturbed kid," a family insider said. He was subject to outbursts from what I recall." A further family friend said he had acted as though he was immune to pain."A few years ago when he was on the baseball team, everyone had to be careful that he didn't fall because he could get hurt and not feel it," said the friend.
He gave no details, but anti-social disorder - also known as sociopathy - is the type most closely linked with violence and criminal behaviour.
He fled the office, jumping on a bus to return home to the house he shared in New Jersey.
Shaken, he told his neighbour in an online message that he thought his mother was dead and he knew who was responsible for the multiple murder. Those on the autistic spectrum have a more limited emotional range and can miss social cues, making it more difficult for them to communicate and feel empathy with others.
In such cases, they are likely to have little regard for the consequences of their actions, and are unlikely to experience fear.
Ryan also said that he had not seen him since 2010.