Paris: A car crashed into a police van Monday on the Champs-Elysees avenue in Paris before bursting into flames, police said.
The driver is "on the ground... unconscious," a police source said, without indicating whether the incident was an accident or a deliberate act.
Paris police said a security operation is underway in the Champs-Elysees shopping district and they are urging people to avoid the area. A subway station in the area is closed.
The high-end neighbourhood is popular with tourists.