The man accused of killed four people at a Montana bar on Friday morning lived next door to it, according to the Montana Department of Justice.

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.

A gunman opened fire at a neighborhood bar in the small town of Anaconda, Montana, on Friday morning, killing four people before disappearing into the rural foothills of southwestern Montana, prompting a search that extended late into the night.