Four Marines killed at Tennessee US Navy centres A gunman has killed four US Marines and injured several others at two US Navy buildings in Chattanooga, Tennessee. A local district lawyer said the shootings are being investigated as an act of domestic terrorism. The gunman, who was also killed by the police in the shot out has been named as 24-year-old Mohammad Youssuf Abdulazeez by the FBI. Reports say he was born in the Middle East. Abdulazeez is believed to have been born in Kuwait, but has lived in the US for several years. He was arrested earlier this year in Chattanooga for driving under the influence of alcohol. BBC