Suspect turns himself in after Iowa officers killed in ‘ambush’

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DES MOINES, Iowa - An arrest has been made in the murder of two police officers killed in separate ambush shootings near Des Moines, Iowa, authorities said.

The first officer, who worked for the Urbandale Police Department, was killed shortly after 1 a.m. Wednesday morning after responding to shots fired in Urbandale, northwest of Des Moines. Authorities said the officer, still seated in a squad car, was found dead at the scene.

About 20 minutes later, a Des Moines police officer found another officer from the same department dead at a nearby intersection. The second officer, just like the first, also was seated in his patrol vehicle. That officer was declared dead at Iowa Methodist Medical Center.

Michael Greene is accused of pulling the trigger in both shootings, but police said they're unsure as to why he did it. Greene turned himself in to a state employee after officers spent seven hours looking for him. Investigators are still searching for a murder weapon.

Greene has a history of provoking racial tensions, and recently waved a confederate battle flag during a National Anthem performance at a high school football game, authorities said.

"On the surface, it doesn't look like there was any interaction between these officers and whoever the coward is who shot them while they sat in their cars," Des Moines Police Sgt. Paul Parizek said.