The man suspected in the “ambush-style” killings of two police officers in Iowa appears in online videos arguing with a cop in one and carrying a Confederate Flag in another.

Police arrested Scott Michael Greene, 46, following the shooting deaths of two officers in Des Moines early Wednesday morning.

The two officers were killed in separate locations three miles from each other, about 2o minutes apart. One officer was from the Des Moines Police Department, the other was was the Urbandale Police Department.

In one 14 October video uploaded to YouTube to an account belonging to “Scott Greene”, the suspect is shown holding a Confederate Flag and US flag at a local high school sports match, in front of black attendees in the bleachers.

The Confederate Flag is a symbol used by the pro-slavery states in the US South before and after the Civil War. It is a popular symbol among white supremacists who argue that it is a symbol of white heritage and Southern pride, not racism.

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Greene can be heard arguing with police in another video uploaded to the same account, called “Police Abuse, Civil Rights Violation at Urbandale High School”. The officers in the video are asking Greene to leave the school property.

“Have I committed a crime?” Greene asks police, who tell him he is “causing a disturbance in the stands” and could be arrested.

“I think I’ve been assaulted by you,” Greene says to the officers in one instance. “You grabbed me and shoved me around.”

Greene was last seen driving a blue ford F-150 pickup truck with Iowa license plates.

In a press conference Wednesday morning, Des Moines police chief Dana Wingert said officers are not yet safe.