BUFFALO (AP) -- A man who was arrested but not charged in the killing of a Cold Spring police officer has surrendered on charges he stalked his ex-girlfriend.

34-year-old Ryan Michael Larson turned himself in to sheriff's officials Sunday to face charges of felony stalking and misdemeanor violation of a restraining order.

Larson appeared in court Monday and was released from Wright County Jail on bail. His next court appearance is scheduled for Jan. 24.

Larson says he did not stalk the woman.

Larson initially was arrested the night Officer Tom Decker was shot to death behind a Cold Spring bar on Nov. 29. He spent four days in jail before being released without being charged. He has maintained his innocence in Decker's death.