A truck driver is dead after a tanker exploded in Frederick, Maryland on Saturday. The truck overturned after hitting a tree on U.S. 15, erupting into a fireball near a residential area. At least five vehicles and six homes were damaged, and the driver of the tanker died at the scene. No other injuries have been reported. Both sides of the highway were shut down and over 100 firefighters were called to the scene. Officials are still investigating what kind of flammable liquid was in the tanker.