At least 80 people are feared to be dead after a lorry drove into a large crowd of people celebrating Bastille Day in France.
A truck ran into a crowd gathered in the southern French town of Nice to celebrate the national holiday late on Thursday.
The incident reportedly killed at least 80, injured around 150 more people and caused huge panic.
Witnesses saw police shooting at the lorry, before it screeched to a halt.
Police later said the driver of the truck was killed, while ‘another man was seen running into the crowds’ according to one of the witnesses.
Officers found guns and grenades inside the vehicle, according to Le Figaro, a French Newspaper.
There were initial fears that he was a possible accomplice with a gun, but a spokesman for the prefecture said this report should be treated with caution.
An eyewitness has reported seeing ‘bodies everywhere’ at the scene.
Another onlooker said: ‘We saw people hit and bits of debris flying around.’
The local prefecture are treating the incident as an attack and residents are being asked to stay indoors.
Local government leader Christian Estrosi wrote in a tweet: ‘The driver of a truck appears to have killed dozens of people. Stay at home for the time being.’
Once the death toll rose, Estrosi added that the incident was the worst disaster in the history of Nice.
Regional newspaper Nice Matin quoted its own reporter at the scene saying there were many injured people and blood on the street.
It published a photograph of a damaged, long-distance delivery truck, which it said was ‘riddled with bullets’ and images of emergency services treating the injured.
Damien Allemand, the paper’s correspondent, was quoted as saying: ‘People are running. It’s panic. He rode up onto the Prom and piled into the crowd… There are people covered in blood. There must be many injured.’
Sylvie Toffin, a spokesperson for the local prefecture, said the truck ‘hit several people’ down the sidewalk near Nice’s Palais de la Méditerranee, a building which fronts the beach.
Wassim Bouhlel, a Nice native, said that he saw a truck drive into the crowd.
‘There was carnage on the road,” Bouhlel said.
Bouhlel said he witnessed the man emerge with a gun and start shooting, but Toffin said she that, “to my knowledge” there was no gunfire.
She said she believed the incident was deliberate.
‘It’s an attack,’ she said.
No group have claimed responsibility for the attack, though France has recently seen a spate of dramatic assaults from by jihadist groups, including the Islamic State group which straddles Iraq and Syria.
A Foreign Office spokesman said: ‘We are in touch with the local authorities and seeking more information following an apparent attack on Bastille Day celebration in Nice.
‘If you are in the area follow the instructions of the French authorities.’
France is still on alert after the Paris terror attacks on November 13, in which 130 people were killed at sites including the Bataclan Theatre and Stade de France.
French president Francois Hollande vowed at the time to destroy the ‘army of fanatics’ responsible for the terrorist attacks.
And in January 2015 the city was rocked by the Charlie Hebdo attack, when 12 people were killed after gunmen stormed the offices of the satirical magazine.
Bastille Day is France’s national day, marking the start of the revolution in 1798 when the prison of the same name was stormed by protesters against the autocratic rule of King Louis XVI.