Investigators searching for a man they say shot and killed four people at a Montana bar Friday morning have located the vehicle he fled in, but the suspect remains on the loose, officials said.

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 probl

Law enforcement officials engaged in a growing manhunt for the suspect, who lived close to the bar. They warned that he was believed to be armed.