NEWTOWN, Conn. (AP) -
More information is emerging about the suspect in today's Connecticut elementary school shootings. A law enforcement official identifies him as 24-year-old Ryan Lanza.
Another official who was briefed on the shooting says the gunman died of a self-inflicted gunshot wound -- and that one of the victims was the shooter's mother, a teacher at the school.
According to one official, the suspect's younger brother is being held for questioning as a possible second shooter.
The official also says Ryan Lanza's girlfriend and another friend are missing in New Jersey.
Although authorities haven't released the number of dead and injured, an official says 26 people were killed, including 18 children, in addition to the gunman. That would make the shooting the nation's second-deadliest at a school -- exceeded only by the Virginia tech massacre in 2007.