Teen says he accidentally killed pal with shotgun in East Oakland

A 19-year-old man has been arrested and charged with murder after accidentally shooting a friend in the back of the head while playing with a shotgun in his East Oakland home, court records released Monday show.

Isaiah Powell is being held without bail at Santa Rita Jail in Dublin in the killing last Tuesday of 18-year-old Frank Franz. Alameda County prosecutors have charged Powell with murder and a weapons enhancement.

Powell told police that he was playing with a shotgun about 12:40 a.m. at his home on the 2700 block of E.C. Reems Court, a cul-de-sac off MacArthur Boulevard, when it went off, striking Franz in the back of the head, authorities said.

Franz died at the scene. The shotgun was recovered, police said.

Henry K. Lee is a San Francisco Chronicle staff writer. E-mail: hlee@sfchronicle.com Twitter: @henryklee