COLUMBIA, S.C. (AP) — A South Carolina man convicted of killing three social workers more than a decade ago has been executed after he asked to drop his appeals.

David Mark Hill was pronounced dead at 6:17 p.m. Friday in the state's death chamber in Columbia.

Defense witnesses testified that Hill went on the shooting spree after his wife asked for a divorce and a social worker accused him of molesting his quadriplegic daughter. Hill was convicted for the 1996 deaths of Jimmy Riddle, Josie Curry and Michael Gregory.