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.

Nice attack: "what this attack is sending as a message is that nowhere is safe"

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.