Westwego, LA, police officer Michael Louviere was shot in the head and killed while stopping to help an injured woman, who also died, in Marrero Friday morning. He was a U.S. Marine who served in Afghanistan before joining the police force in July 2015, according to Westwego Police Chief Dwayne Munch.

"This was a cold-blooded murder," Munch added, reports the Times-Picayune. 

According to Munch, Louviere ended his shift at 6 a.m. Friday and was headed home on Ames Boulevard when he came across a traffic accident near the intersection of Barataria Boulevard. He was in full uniform when he was shot, Munch said.

The injured woman, now identified as Holt's pregnant wife Simone Veal, called police at 6:30 a.m. to say she had been shot, reports WGNO. A domestic incident had reportedly resulted in her being shot, and while driving away she ended up hitting another car, where Louviere stopped to help with the traffic accident, reports WVUE.

As Officer Louviere tended to the injured woman, a male subject approached him from behind and shot him in the back of the head, killing him, reports ODMP.org.

Jefferson Parish Sheriff Newell Normand named Sylvester Holt, 32, as a person of interest in the shooting. He reportedly fled the scene on foot. After multiple agencies searched for him, a man who may be Holt was reportedly found threatening to jump from the Crescent City Connection bridge in New Orleans.

Officer Louviere was 26. He leaves behind a wife and two young children.