Bloodbath on Nice road: Grisly video of severed bodies shows tragic aftermath

Nice, France: It was supposed to be a night of celebration. People were gathered on the streets of the French city of Nice on Thursday evening to mark Bastille day celebrations -- but the evening of revelry ended with tears, blood, screams after a truck rammed into the crowd, killing at least 84 people, making it France’s worst terror attack in 2016.

Read: World leaders react with horror to Nice attack

In the aftermath of the terrifying incident, a grisly video footage of the incident has appeared online that shows people screaming in terror and running for their lives where thousands of adults and children had gathered to see the Bastille Day fireworks display.

Shot by an unidentified person, the video footage shows scores of dead bodies lying on the road as terrified citizens struggle to find their friends and relatives among the deceased.

Warning: Graphic content (Video courtesy: RT/YouTube)

Police officials and medics can be seen attending to the wounded as others wade through the streets in search of a safe place to hide.

Terrified citizens can be seen crying uncontrollably, sitting besides the dead.

A truck loaded with weapons and hand grenades drove onto a sidewalk for more than a mile, ploughing through Bastille Day revelers who'd gathered to watch fireworks in the French resort city of Nice late Thursday. At least 80 people were killed before police killed the driver, authorities said.

It was not immediately clear who would have been behind an attack, but France has recently seen a spate of dramatic assaults by jihadist groups, including the Islamic State group which straddles Iraq and Syria.

President Francois Hollande said in a televised statement that all of France was under an "Islamist terrorist threat" and extended by three months a state of emergency that has been in place since the November attacks that killed 130 in Paris was to end July 26.