The manhunt for the person who opened fire and killed four people at a Montana bar stretched into its fourth day Monday.

Officers are "unrelenting in their pursuit, working around the clock" to find him, Montana Gov. Greg Gianforte stressed at a news conference on Tuesday. "Rest assured, our brave men and women of law enforcement aren’t giving up."

A manhunt for the Iraq military veteran suspected of fatally shooting four people at a bar in Montana continued for a fourth day on Monday. On Friday at around 10:30 a.m. local time, Michael Paul Brown,