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 in Paris.
A Paris city hall official said four gunmen systematically slaughtered at least 87 young people attending a rock concert at the Bataclan music hall.
The siege ended when security forces stormed the building.
People were shot dead at bars and restaurants at five other sites in Paris. Eight attackers are reported to have been killed.
Police believed all of the gunmen were dead but it was unclear if any accomplices were still on the run after the string of near-simultaneous attacks.
The gunmen’s motives were not immediately confirmed, but one witness at the Bataclan heard one of the attackers appear to express support for the militant Islamic State (IS) group.
Paris residents have been asked to stay indoors and about 1,500 military personnel are being deployed across the city.
President François Hollande, who was at the Stade de France at the time of the assaults, said:
“We are going to lead a war which will be pitiless. Because when terrorists are capable of committing such atrocities they must be certain that they are facing a determined France, a united France, a France that is together and does not let itself be moved, even if today we express infinite sorrow.”