Police say Edgar Maddison Welch was pulled over Saturday night as a passenger in a traffic stop because he had an outstanding warrant.

He pled guilty to a to a federal charge of interstate transportation of a firearm and ammunition, and a D.C. charge of assault with a dangerous weapon.

Police said Edgar Maddison Welch pulled out a gun during a traffic stop and when he did not drop it as instructed, was shot by police.