A Medicine Hat man has been charged with arson after reportedly setting his truck on fire. Police responded to calls around 11 Saturday morning for a truck burning in a field in Brier Park. Witnesses say the man had a jerry can and then set the truck on fire. When police arrived, they arrested the man on outstanding warrants. He was later charged with arson as the blaze occurred in a public place with nearby gas lines. Police believe mental health could be a factor in the man’s motive for setting the fire.