ABC News will air a special edition of " Good Morning America" on Saturday, December 15. George Stephanopoulos and Elizabeth Vargas will anchor the broadcast with Josh Elliott, Amy Robach, Dan Harris reporting from the scene in Newtown, Connecticut along with other members of the ABC News team.

Twenty children died Friday when a heavily armed man invaded a Newtown, Conn., elementary school and sprayed staff and students with bullets.

More information on ABC News' coverage of "Tragedy at the Elementary School" here.