Robert Scollard was arrested on May 4 after he allegedly tried to rob the Best Bet Casino on Euclid Avenue in Helena.
According to the Helena Police Department, Scollard reportedly entered the business, demanded money from a casino employee, and said he had a gun.
When confronted by a second casino worker, Scollard is said to have fled and was arrested less than an hour later.
Scollard has prior convictions for robbery, arson, theft, and forgery.
His bond has been set at $40,000.