The guns used in the massacre at Sandy Hook Elementary School in Newtown, Connecticut, were legally purchased by the shooters mother.
Adam Lanza, 20 years old, took three guns, all legally purchased and registered by his mother, Nancy Lanza, to the school and killed 26 people and himself.
Police found Lanza dead in a classroom along with two guns, a Glock and Sig Sauer; another gun, a Bushmaster, was found in his car.
Authorities say all three were registered to his mother, a kindergarten teacher at Sandy Hook, who was found dead at her home in Newtown.
Adam Lanza’s older brother Ryan, 24, has been taken in for questioning by police. They say he is not under arrest and is not considered a suspect.