Law enforcement officers are scouring a mountainous area of western Montana for a military veteran who authorities say opened fire at a bar, killing four people.

The manhunt for a suspect in the killing of 4 people in Anaconda, Montana, continued on Saturday on the ground and in the air, including multiple local, state and federal agencies, authorities said.Michael Paul Brown remains at large after he allegedly walked into The Owl Bar and opened fire on Friday before fleeing the scene,