Anonymous posts chilling video threatening those responsible for Nice truck attack

Anonymous has posted a video threatening to do "all that is necessary" to stop those responsible for Thursday's truck attack in Nice, France, which killed at least 84 people.The hacker group, known for its cyber attacks against controversial organisations and individuals, has previously vowed war on terrorist group Islamic State for its co-ordinated attacks elsewhere in the country, including the November 2015 Paris attacks.

Police officers and rescued workers stand near a van that ploughed into a crowd leaving a fireworks display in the French Riviera town of Nice on July 14, 2016 CREDIT: ERY HACHE/AFP OR LICENSORS

It is not clear whether Thursday's incident was a terror attack, although French president François Hollande has spoken of its "undeniable terrorist nature".In the video, an announcer wearing an Anonynous Guy Fawkes mask says: "to defend our values and our freedom, we're tracking down members of the terrorist group responsible for these attacks. We will not give up".

Anonymous announcer: "we will not forgive" CREDIT: ANONYMOUS

Suspect Mohamed Lahouaiej Bouhlel, 31, sprayed bullets at revellers who were watching Bastille Day fireworks along Promenade des Anglais, as well as running them over in the truck he was driving. He was shot dead by police at the scene.