Islamic State claim responsibility for Paris Attacks
The Islamic State terror group has claimed responsibility for a string of bomb and gun attacks in Paris which killed at least 127 people and wounded 180 more.
French president Francois Hollande has denounced the attacks as an "act of war" and vowed that France would be "pitiless" in its response to the "absolute barbarity".
Speaking after an emergency meeting of senior government and security officials at the Elysee Palace, Mr Hollande declared three days of national mourning.
Policing was being strengthened at ports and major events in the UK, and Prime Minister David Cameron was chairing a meeting in Downing Street of the Government's Cobra emergency committee which could raise the official assessment of the threat from international terrorism from its current "severe" level.
A manhunt is under way for accomplices of gunmen who targeted a concert hall and the French national football stadium and sprayed the terraces of bars and restaurants with gunfire in at least six almost simultaneous attacks.
In a televised address to the nation, Mr Hollande said the attacks were "committed by a terrorist army, the Islamic State group, a jihadist army, against France, against the values that we defend everywhere in the world, against what we are: a free country that means something to the whole planet".
He said the attacks were "prepared, organised and planned from abroad, with complicity from within the country".
The French army and security forces were mobilised "at the highest possible level" and France would "act by all means anywhere, inside or outside the country" against the terrorists responsible, he said.