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.

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.

Authorities are searching for Michael Paul Brown, the suspect in a deadly shooting at a bar in Anaconda, Montana, that left four people dead.