At least 84 people have been killed after a lorry ploughed into a crowd attending Bastille Day celebrations in the French city of Nice on Thursday night, in what is being investigated as a terror attack.

Attack in Nice: amateur footage shows several gunshots and police firing at truck driver - GRAPHIC FOOTAGE

At least 84 people have been killed after a lorry ploughed into a crowd attending Bastille Day celebrations in the French city of Nice on Thursday night, in what is being investigated as a terror attack.