Description:The shooter is dead inside the school, and the situation is secure, said State Police Lt. J. Paul Vance.
The Associated Press, citing a law enforcement official, identified the shooter as Ryan Lanza and said his younger brother is being held for questioning as a possible second shooter. Local authorities would not confirm the name of the shooter.
The law enforcement official said the boys' mother, Nancy Lanza, works at the school as a teacher. She is among the dead, an official said.(2:30)