A man rammed his auto into a police vehicle in Paris' Champs-Elysees shopping district Monday, prompting a fiery explosion, and was killed in the incident, authorities said.
The driver, who had a weapon inside the vehicle, was knocked unconscious and is seriously injured, French media report.
Interior Ministry spokesman Pierre-Henry Brandet says the driver whose auto exploded as he tried to ram a police vehicle is "most probably" dead.
Interior Minister Gerard Collomb said that weapons and explosives were found inside the vehicle.
A report on France's BFM TV said the man was known to security services and had been carrying a gas bottle in the vehicle.
The incident comes just two months after a policeman was shot and killed on the world-renowned avenue, three days before the first round of France's presidential election.
- In April, a man shot at police officers - also on the Champs-Elysees - killing one officer and wounding two others.
Authorities say a driver has rammed his auto into a police vehicle in the Champs-Elysees shopping district.
"Apparently, it's a deliberate act", a source close to the investigation said.More news: Crusaders field strong pack against Lions
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Police attend the scene on Champs Elysees avenue in Paris, France, Monday, June 19, 2017.
Early Tuesday, the Paris prosecutor's office confirmed four of the driver's family members were being held by police.
The Champs-Elysees avenue has been cordoned off after the intervention of police.
Earlier this month, an attacker on foot went after a police patrol with a hammer in front of Notre Dame Cathedral.
"No one can be satisfied that someone who has been officially flagged up can benefit from this authorization (to carry arms)", Edouard Philippe told BFM TV.
A man could be seen lying on his stomach on the ground immediately after the incident, wearing a white shirt and dark shorts.
Two police officials identified the attacker as 31-year-old Adam Djaziri from the Paris suburb of Argenteuil, and said he had been on police radar for ties to radicalism. The high-end neighborhood is popular with tourists.
A subway station in the area is closed. France is under a state of emergency after a string of deadly Islamic extremist attacks.