GALT (AP) — A gunman who fatally shot a police officer before killing himself was not involved in a reported burglary at a nearby duplex, Sacramento County authorities said Wednesday. Galt police Officer Kevin Tonn was killed Tuesday when he encountered an armed man in a field near the residence, sheriff's Sgt. Jason Ramos said in a release. Tonn and other officers were responding to a call about the burglary when a witness pointed out a possible suspect and Tonn went to question him, Ramos said.