Prosecutors dismissed voluntary manslaughter charges against a 24-year-old Chattanooga man today.
Andrew Harrison Graves was charged with the June 2010 shooting death of Michael Newby, 24.
Graves said he was ambushed by Newby and fired in self-defense.
Morgan Fox and Grace Trotter told police that at about 4 a.m. June 17, 2010, they were watching a movie with Newby in his 1236 N. Concord home when he left the room.
Graves knocked on the front door, they let him in, he sat on the couch.
About 20 minutes later there was another knock, and when they answered the door a masked gunman entered and ordered everyone to the floor.
Graves fired, hitting the gunman - Newby - in the head. Newby died of a gunshot wound to the head.
Police arrested Graves a day later in Bradley County. Officers said he had a gun, LSD and a pound of marijuana.