Police say a man suspected in the killings to two Des Moines area officers surrendered to a state Department of Natural Resources officer.

Des Moines police Sgt. Paul Parizek says Scott Michael Greene flagged down the officer Wednesday morning in rural Dallas County, west of Des Moines, and presented his identification. He was taken into custody and is now being treated at a Des Moines hospital.

Greene is suspected in the shooting deaths of Urbandale officer Justin Martin, with the force since 2015, and Sgt. Anthony "Tony" Beminio, who joined the department in Des Moines in 2005. Martin was single. Beminio was married with children.

Parizek says Greene is suspected in the killings but hasn't yet been charged.

Greene has a record of confrontation with police and others. Iowa court records show 46-year-old Scott Michael Greene, of Urbandale, was jailed and charged with interference with official acts after resisting Urbandale police officers trying to pat him down for a weapon on April 10, 2014.

A complaint signed by an Urbandale officer says Greene resisted verbal commands, was hostile and combative. It says he was known to be armed. He entered a guilty plea and was fined.

Two days later Urbandale police were called to answer a complaint of harassment at the apartment complex where Greene lived. The complaint says he threatened to kill another man during a confrontation in the parking lot. He was charged with harassment, pleaded guilty and received a suspended jail sentence and a year of probation.

Records show he completed a court-ordered substance abuse and psychological evaluation.