Ryan Lanza, 24, was initially identified as the shooter.
He is the brother of the shooter at Sandy Hook Elementary School.
His younger brother, Adam Lanza, 20, was dressed in black military attire and fired off 100 rounds with a .223 calibur rifle.
His mother, Nancy, was killed at her home, and a source close to the investigation tells us that every child in her kindergarten classroom was executed one-by-one.
Ryan Lanza, 24, of Hoboken, NJ, is being questioned by Police.
According to reports, Ryan’s girlfriend and another woman are missing in New Jersey.
In total, 18 children died at the school, 2 were taken to Danbury Hospital and died there, 6 adults, Adam Lanza killed himself and his mother.