Tragedy struck the Des Moines area early this November. Urbandale Police Officer Justin Martin and Des Moines Police Sergeant Anthony Beminio were shot   and killed while on patrol Wednesday, November 2.

The first shooting occurred at 1:06 a.m. on Wednesday morning just north of Des Moines, in Urbandale. Police responded to a report of shots being fired and found Martin’s body in the front seat of his squad car. The second shooting occurred 20 minutes later in Des Moines. Police found Beminio shot, also in his squad car. Beminio was rushed to the hospital, where he later died. The two shootings transpired within three miles of each other, but neither police officer reportedly interacted with the other or with the shooter prior to the killings.

“The shootings appear to have been ambush-style attacks,” police spokesman Paul Parizek said in a statement to the press.

Several hours after the shooting, 46-year-old Scott Michael Greene peacefully turned himself in to authorities. Greene was formally charged with two counts of first-degree murder on November 3.

“According to police, the investigation has produced probable cause to support these charges,” KCCI news reporter Kim Onge said. “No additional information will be released at this time regarding the charges.”

That     Thursday, he      was transported to the Polk County Jail. Greene is currently being held without bond.

Greene has a long history with the Urbandale Police Department. The Des Moines Register reported that Greene  pleaded  guilty to two separate   criminal  charges in 2014 and was in court as recently as the week before the shootings in connection  to  a  domestic  altercation.

In addition, he was recently escorted out of a Urbandale High School   football     game  by  police  officers for displaying a Confederate flag.

Des Moines   Police Chief Dana Wingert held a press conference Thursday evening for the fallen police officers.

Wingert said, “This was a cowardly act of calculated murder, and unfortunately we all, as a community, as police  departments, as families, are all   left to  deal with the aftermath.”