An armed man was killed on Monday when his car exploded after allegedly ramming it into a French police van, said the interior minister.

Gerard Collomb said the alleged assailant was carrying gas cylinders, a Kalashnikov assault rifle and knives and had to be pulled out of his burning car by police officers.

He said French security services had once again been the target of an attempted attack, adding that the terror risk level was still very high.

According to interior ministry spokesman Pierre-Henri Brandet, no members of the security forces or civilians were injured during the incident at Paris' central Champs Elysées avenue.

The counter-terror prosecutor's office launched an investigation into the attack, he said, adding that explosives experts were on the scene to make sure there was no further danger.

A man working near the site of the attempted attack told EFE that he saw a man who looked unconscious lying on the ground beside a car.

According to local media reports, the alleged assailant was known to intelligence services and was believed to have been radicalized.

On Apr. 20, the Champs Elysées were the scene of a shooting by a man who had sworn loyalty to the Islamic State terror organization, leaving a police officer dead.