At least 120 people were killed in attacks by gunmen and suicide bombers at multiple locations in Paris on Friday evening.
A Paris city hall official said gunmen systematically slaughtered more than 80 people attending a rock concert at the Bataclan music hall in the deadliest violence to strike France since World War II.
Anti-terrorist commandos eventually launched an assault on the building, killed the gunmen and rescued dozens of shocked survivors.
Another 40 people were killed in up to five other attacks in the Paris region, the city hall official said. An apparent double suicide bombing was reported outside the national stadium where President Hollande and the German foreign minister were watching a friendly soccer international.
Describing it as an unprecedented terrorist attack, French president Francois Hollande declared a state of emergency across the country and ordered the borders to be sealed.
World leaders from US president Obama to British prime minister Cameron and UN secretary-general Ban ki-moon have condemned the attacks.
There was no immediate claim of responsibility for the Paris attacks, but according to the news channel BFMTV, the terrorists shouted “It’s for Syria”.