Adam Lanza Father Meets With Newtown Victim's Parents; Answer Questions About Son's Mental Health

Nothing will bring back 6-year-old Emilie Parker, who on Dec. 14 last year died in her classroom together with six adults and 19 other first-graders. The massacre of Sandy Hook Elementary in Newtown, Conn., will forever remain in the American conscience as one of the hardest episodes of recent history.

The perpetrator was a 20-year-old named Adam Lanza, who also killed his mother Nancy before going to the school, and committed suicide as police was approaching the school. After the news sparked and the outrage spread, rumors on the possible motive behind the attack started going around, with many of them focusing on Adam's mental health, his obsession with violent video games and a fascination with mass killers.

Nobody will know for sure, but this week, the parents of Emilie Parker got some answers when they met with Peter Lanza, Adam's estranged father, whom his mother divorced in 2009 after a long separation. They felt that learning more about the killer of their little girl would, if anything, help assuage the pain.

"I needed to tell him something, and I needed to get that out of my system," Alissa Parker, Emilie's mother, told CBS News.

The Parkers did not share the full content of the meeting, but they did disclose that they did not hold Peter accountable of what happened.

Many fingers pointed at Nancy Lanza, saying that she should have seek more help in dealing with Adam's psychological struggles.

"Do I think it was her fault? I am sure that there were things that she's going to have to be accountable," said Ms. Parker. She also stated that the Parkers were not mad at Peter Lanza.

The day after the massacre, Robbie Parker told reporters that he felt for the shooter's family. "I can't imagine how hard this experience must be for you and I want you to know that our love and our support go out to you as well," he said.

The Parker believe that Peter Lanza might hold the keys to preventing another similar tragedy. "I wanted to tell him that there was a lot of hope and opportunity to be gained from this," Ms. Parker said. "There was information and things to be learned from what happened, and without his cooperation, it would go nowhere."