Report: Lanza destroyed computer's hard drive before the attack

“It was pretty bad,” the source said of the smashed hard drive. “If he destroyed the computer, that means there are things on there that would concern him. It is going to be awhile before they can decipher the information.”

The FBI’s computer analysis response team is still trying to put the pieces of the hard drive back together, said the law-enforcement source, who asked not to be identified because of the ongoing investigation, “The kid knew what he was doing,” the source said. “This was a planned event. There is no question about it.”

According to the Hartford Courant, Lanza had used the computer to play a violent video game in which life-like characters participate in bloody battle scenes. At this point, there’s no telling what else he did with it.