Deadly shooting at Fort Hood US military base leaves four dead and several injured

A shooting at Fort Hood military base in the US has left four people dead including the gunman. Sixteen others have been wounded – some critically. The whole base was put under lock down as police investigated the incident. The suspect is thought to have served in Iraq and had been suffering from depression. Witnesses say he used a semi-automatic handgun when he opened fire . Lieutenant General Mark Milley: 'The shooter is dead from a self-inflicted gunshot wound. With regard to the investigation at this time there is no indication that this incident is related to terrorism although we are not ruling anything out – the investigation continues.' The shooting is the third such incident at a military base in the United States in about six months. President Barack Obama gave his reaction: 'The folks there have sacrificed so much on behalf of our freedom. many have been on multiple tours of Iraq and Afghanistan, they served with valour and distinction. We are heartbroken that something like this might have happened again.' Five years ago Fort Hood was the scene of the deadliest attack on a domestic military installation in US history. Maj Nidal Hasan shot dead 13 people and wounded 32 others.He claimed to be protecting the Taliban from US troops who were about to be deployed to Afghanistan. Hasan was sentenced to death last September.