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.

Police are looking for Michael Paul Brown, 45, who's wanted for allegedly shooting four people in The Owl Bar in the small town of Anaconda, Montana.

A manhunt is intensifying for the gunman who allegedly killed a bartender and three patrons at a bar in southwestern Montana, authorities said.