Here is Mohamed Lahouaiej Bouhlel the man who murdered 84 on Bastille Day in Nice in France
Here is what we know so far about the lorry attack in Nice.
A terrorist drove a truck through crowds celebrating Bastille Day on Thursday night in the seaside city of Nice on the French Riviera, killing at least 84 people, including several children.
Eyewitnesses said the driver swerved from side to side to kill as many people as possible as he drove for hundreds of metres along the Promenade des Anglais on the seafront.
Christian Estrosi, the regional president in Nice, said at least 10 children were among the d*ad, and the death toll is expected to rise.
A "small number" of Britons are injured.
French authorities confirmed 202 people were wounded, 25 of which are on life support, while 52 are in a critical condition.
The attacker is reported to be 31-year-old Mohamed Lahouaiej Bouhlel, a man of French-Tunisian origin who was not known to intelligence services.
One witness said the driver produced a gun before being shot by police.
No hostages were taken and the lorry driver was "neutralised", with authorities investigating if he was acting alone.
Mr Estrosi said guns and grenades were found in the lorry.
As the sun rose on Friday morning, the lorry could still be seen where it finally came to a halt, its windscreen peppered with bullet holes.
France has declared three days of national mourning following the atrocity.
French president Francois Hollande said the country's state of emergency would be extended for another three months.
A military operation is in place allowing the mobilisation of 10,000 troops.
Mr Hollande said the country's borders were being tightened, as he vowed that France would show "real force and military action in Syria and Iraq".
London Mayor Sadiq Khan announced he will be "reviewing our own safety measures" following the attack.
A Rihanna concert scheduled for Friday night at the Allianz Riviera stadium in Nice has been cancelled, as have the city's jazz festival, which was due to run from Saturday to Wednesday, and some of the Bastille celebrations over the weekend.
Shootout: Police approach the cab where the gunman, named locally as Mohamed Lahouaiej Bouhlel, went on his rampage. It is not clear if this was taken as he was killed after this picture was taken with one witness saying he may have been hanging out of a window
One eyewitness filmed armed officers approaching the cab of the lorry and firing through its windscreen and doors before it appears Bouhlet can be heard screaming after being hit by a police bullet
Terror attack: At least 84 people were killed and dozens more critically injured last night when a terrorist killer, named locally as Mohamed Lahouaiej Bouhlel, drove this truck, riddled with bullets, through crowds celebrating Bastille day in Nice
Murder weapon: The key suspect is said to have been parked up for nine hours before carrying out the attack and may have been stopped by police but claimed he was delivering ice cream. In fact the back of his lorry contained many weapons and grenades
Disaster zone: Bodies lie along the promenade showing the devastating route the lorry took as it went through huge crowds
Tears for the lost: Two young women, obviously grief-stricken, lay flowers and messages for the many people killed and injured in Nice last night
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