The driver of a lorry that killed 84 people when it ploughed into crowds during Bastille Day celebrations in Nice has been named as Tunisian Mohamed Lahouaiej-Bouhlel.
The 31-year-old, who was shot dead at the scene by French police, rammed the hired truck into scores of people on Thursday night - leaving a further 202 people injured, many criticially.
Eyewitnesses described blood-curdling screams as the lorry zig-zagged through the crowd in an effort to kill as many as possible during another night of terror in France.
The deaths rocked a nation still dealing with the aftermath of attacks in November in Paris that killed 130 and in January 2015 that killed 17.
"All of France is under the threat of Islamic terrorists," French president Francois Hollande said.
Today prosecutors named the man behind the wheel in the latest atrocity to hit the country as 31-year-old Bouhlel, who lived in Nice and was not known to intelligence services.
Prosecutor Francois Molins said he had driven the lorry for than a mile along the Promenade des Anglais as people headed home after a fireworks display to mark the French national holiday, leaving scenes of carnage in his wake.
Ammunition was later found inside the vehicle after it came to a stop and armed police killed the attacker during an exchange of gunfire, Mr Molins added.
Witness Nadar El Shafei told the BBC: “He died inside the vehicle - I saw his head [hanging] out of the window, they kept shooting him from all sides just to be sure. Then they asked us to run away in case there were others inside the car or a bomb.”
Nice's regional president said at least 10 children were those slaughtered in the killing spree. A small number of Britains are thought to be hurt.
France has declared three days of national mourning as it reels from the atrocity.
Prime Minister Theresa May condemned the attacks as "horrifying", while London Mayor Sadiq Khan announced a review of security in the capital ahead of events including the Notting Hill carnival.
Tonight landmarks around the world, including the Houses of Parliament, are expected to be lit in the colours of the French national flag as a symbol of solidarity with the victims of the attack.
