Warner Bros is confirming that a stuntman was seriously injured in an accident and taken to the local UK hospital by ambulance. It took place at Leavesden Studios where the latest Harry Potter And The Deathly Hallows, the seventh and final film based on JK Rowling’s novels, is currently in pre-production. British press reports say the 25-year-old stunt double for the film’s star Daniel Radcliffe was performing an aerial sequence with a harness Thursday AM when he fell to the ground following an explosion which was part of the stunt. His name hasn’t been released yet.