The Calaveras County Sheriff´s Bomb Squad was dispatched to the Post Office at Douglas Flat before dawn this morning.
Deputies were sent to the area after dispatchers received reports of an explosion in the area. When deputies arrived they found Charles Williams suffering from injuries to his left hand. Williams had apparently detonated a non-electric blasting cap. The Bomb squad recovered another blasting cap from Williams that he had in his pocket. Williams lives next to the Post Office and had allegedly been setting off fireworks before he injured himself. Williams is a convicted felon and may face charges related to being in possession of explosives.