A manhunt in western Montana extended into Friday night as authorities searched for a suspect they believe fatally shot four people at a local bar hours earlier and who they said remained armed and dangerous.

Four people were killed in a shooting at a Montana bar and law enforcement are searching for a suspect described by his niece as a former U.S. soldier who struggled to get help for mental health problems.

The search for the suspect continued in the mountains just west of Anaconda, where he is accused of fatally shooting four people, officials said.