Paris attacks: Gunmen in concert hall 'kept shooting', says survivor

Jerome Bartelemy, a survivor of the Bataclan concert hall attack in Paris, has described how the gunmen told people lie down - and then ''kept shooting''.

France has declared a national state of emergency and tightened borders after at least 120 people were killed in a night of gun and bomb attacks.

Eighty people were reported killed after gunmen burst into the concert hall and took dozens hostage.