What We Know About the Bastille Day Attack in Nice, France

Update 5:15 p.m. PST — At least 75 people were killed and 50 others were injured after a driver drove a truck into a large crowd celebrating Bastille Day in Nice, France, The Associated Press reports. The truck was apparently packed with firearms, explosives and grenades, said president of the region, Christian Estrosi.

A French official described the event as "an attack," the Associated Press reports. The driver was apparently killed, according to police. The incident happened at about 11:40 p.m. local time at Promenade des Anglais, a location where fireworks were held for the country's national holiday.

A witness told the AP that a man emerged from the truck with a gun and opened fire. CNN affiliate BFM-TV reported an exchange of gunfire between the suspect and police.

The prosecutor's office in Paris says it is investigating the attack as an act of terrorism. No terrorist groups have claimed responsibility for the attack as of yet.

France has faced several serious terror attacks in the past few years, including the ISIS-claimed attacks in Paris in November 2015 that left 130 people dead and left hundreds wounded. In January 2015, the offices of French satirical magazine Charlie Hebdo were attacked, leaving 12 people, including four prominent cartoonists, dead.

This story is developing. We will update this article when more information is available.