At some point before he went to the school, investigators believe Adam Lanza, 20, killed his mother ... Authorities say the first emergency call about the shooting came in at "approximately ...

The rest fell victim to Lanza’s senseless rampage ... was one of 26 victims in the Sandy Hook Elementary School shooting in Newtown, Conn. She died in her classroom shielding her first-graders ...

Adam Lanza killed 20 elementary school children ... including the 1999 Columbine High School shooting. Documents revealed Lanza had created a meticulous spreadsheet of previous mass murders.

Adam, who killed Nancy Lanza, 54, before unleashing a nightmarish attack that killed 20 children and six others at the school Friday, was prone to hurting himself, the drinking buddy said.

Police interrogated Ryan Lanza - the older brother of Sandy Hook Elementary School shooter Adam Lanza - for hours after the massacre in Connecticut, according to a new book by New York Daily News ...

Full coverage » At some point before he went to the school, investigators believe Adam Lanza, 20 ... say the first emergency call about the shooting came in at "approximately" 9:30 a.m. "Sandy ...