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The video, which features a clown maksed man with a gas mask and a gun, was posted online by the alleged shooter.

Express.co.uk has chosen not to identify the 17-year-old believed to be behind the terrifying assault.

The same social meida account is filled with creepy pictures and videos, depicting evil characters, masked men and sinister looking characters clutching chainsaws.

On Thursday, students fled Tocqueville school in Grasse, hiding in a nearby supermarket, after a heavily-armed shooter entered the school.

Interior ministry spokesman Pierre-Henry Brandet said three people had been injured, and five other people were in shock after the teenager opened fire with the rifle.

The headmaster of the Alexia de Tocqueville high school is said to be among the wounded.