Gunman in Germany kills 6 in Jehovah's Witness hall attack

• A gunman killed six people at a Jehovah's Witness hall in Hamburg, Germany.
• When police arrived, he shot and killed himself. 
• The shooter used a semiautomatic pistol that he legally owned.

A gunman killed six people at a Jehovah's Witness hall in Hamburg, Germany. The former Jehovah's Witness shot and killed himself when police arrived. The shooter used a semiautomatic pistol that he legally owned.