3m ago 11:31
Live footage of the scene showed scores of officers apparently entering the industrial estate where the gunmen have taken a person hostage.
The officers walked between two columns of pallets towards the grey buildings. A Sky News correspondent, who says he is 100 metres away from this scene, said officers moved calmy and without urgency.
Troutman @Metz_57
Numerous Police forces gathering close to the CDT company where the hostage taking place! #dammartin #JeSuisCharlie