Bullet wounds to the mouth and a fractured skull are just some of the injuries sustained by accused Boston marathon bomber Joehar Tsarnev. Court documents released today detail the extensive injuries Tsarnev received during his April 19th shootout with police following the bombings. It’s still unclear to authorities if they are self inflicted. The 20 year-old is accused of killing four people after planting bombs at the marathon. He has pleaded not guilty to 30 federal charges.