Tuscaloosa police say Frederick Leonard Thompson is charged with attempted arson and assault.
While being treated in the emergency room, police say Thompson threatened to blow up the hospital using nearby oxygen tanks and a lighter.
Tuscaloosa County Sheriff Ted Sexton happened to be in the hospital when a nurse called for help. The matter was over in minutes.
Sexton was treated suffering minor injuries. Thompson is being held in the Tuscaloosa County Jail on a $50,000 bond.