A man who was inside the theatre when the gunmen entered told a French radio station that the men shouted 'Allah Akbar' as they opened fire. He added: 'The men came in and started shooting. Everyone fell to the ground. It was hell. I took my mum, and we hid. Someone near us said they have gone, so we ran out. 'I was only thinking of escaping. We're out now. I think people are still inside. It's a nightmare - a nightmare.' They also shouted, 'this is for Syria', another witness at the theatre claimed.