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

On Monday, the U.S. Marshal Service posted on X that a reward of up to $10,000 would be offered for any information leading to Brown. The agency has also set up a tipline at: 1-8-77-WANTED-2.

Authorities have identified the four fatal victims of the mass shooting at a Montana bar as they continue to search for the murder suspect.