Authorities were scouring a mountainous area of western Montana for a military veteran who they say opened fire at a bar in the small town of Anaconda, killing four people.

Investigators searching for a man they say shot and killed four people at a Montana bar Friday morning have located the ...

ABC News contributor and former NYPD chief Robert Boyce breaks down the ongoing police investigation after a gunman opened fire at a Montana bar, killing at least four people.

Authorities were focusing on brushy terrain near the town of Anaconda, where they said the suspect killed four people.

Authorities said the suspect in a shooting at The Owl Bar in Anaconda, Montana, was believed to be armed and dangerous.