A man with a medical problem unintentionally left a backpack with a suspected explosive device Thursday at an AmeriGas facility in Tahlequah, Okla. The backpack also contained a handgun, ammunition and other explosive contents. "It was just a circumstantial thing. That [AmeriGas] is where he happened to be when he left with EMS. His bag had the capability of causing an explosion. There was no intent to blow up or destroy AmeriGas," said Tahlequah Police Chief Nate King.