The gunman behind the second-deadliest school shooting in U.S. history has been identified as 20-year-old Adam Lanza, NBC News reported. Police found Lanza dead at the scene—Sandy Hook Elementary School in Newtown, Conn., NBC 4 New York reported. Lanza’s mother, Nancy Lanza, was found fatally shot in her Newtown home. Law enforcement officials first reported that Lanza's brother Ryan was believed to be behind the school shooting, but later corrected their report after they found Ryan at his home in Hoboken, N.J. Ryan told police that his brother had a history of mental health issues. Former classmates described Lanza as a shy but smart student, NBC News reported. Lanza carried four guns to the school on Friday, law enforcement officials told NBC News. Two 9mm handguns recovered at scene—a Glock and a Sig Sauer—were legally purchased and registered to the shooter’s mother. The make of the other two and whom they were registered to is not known. Two days before the shooting Lanza went to a sporting goods store in Danbury, Conn., and tried to purchase a rifle, but the store declined the sale, they say, partly because he did not want to undergo the background check, and partly because Connecticut has a waiting period, which he wouldn't agree to. Twenty children and six adults were killed at the school Friday morning.
