Police officers walk across a sealed off area on June 19, 2017 on the Champs-Elysees avenue in Paris, after a car crashed into a police van before bursting into flames. (Photo credit THOMAS SAMSON/AFP/Getty Images)
Champs-Elysees Attack
Police officers walk across a sealed off area on June 19, 2017 on the Champs-Elysees avenue in Paris, after a car crashed into a police van before bursting into flames, with the driver being armed, probe sources said. (Photo credit THOMAS SAMSON/AFP/Getty Images)
Champs-Elysees Attack
Police officers walk across a sealed off area, with police and rescuers' cars and vans in the background, on June 19, 2017 on the Champs-Elysees avenue in Paris, after a car crashed into a police van before bursting into flames, with the driver being armed, probe sources said. (Photo credit THOMAS SAMSON/AFP/Getty Images)
Champs-Elysees Attack
Police officers and anti-riot police officers patrol the Champs-Elysees avenue on June 19, 2017. (Photo credit ALAIN JOCARD/AFP/Getty Images)
Champs-Elysees Attack
Anti-riot police officers patrol the Champs-Elysees Avenue after a car crashed into a police van before bursting into flames, with the driver being armed, probe sources said.
A source close to the investigation said the driver was "seriously injured". (Photo credit THOMAS SAMSON/AFP/Getty Images)
Champs-Elysees Attack
Police seal off the Champs-Elysees avenue on June 19, 2017 in Paris after a car crashed into a police van before bursting into flames, with the driver being armed, probe sources said.
A source close to the investigation said the driver was "seriously injured". (Photo credit ALAIN JOCARD/AFP/Getty Images)
Champs-Elysees Attack
Anti-riot police officers patrol the Champs-Elysees avenue on June 19, 2017 in Paris, after a car crashed into a police van before bursting into flames. (Photo credit THOMAS SAMSON/AFP/Getty Images)
Champs-Elysees Attack
Police officers patrol the Champs-Elysees avenue on June 19, 2017 in Paris, after a car crashed into a police van before bursting into flames. (Photo credit THOMAS SAMSON/AFP/Getty Images)
Champs-Elysees Attack
A car with all doors and trunk opened is pictured in a Police sealed off area of the Champs-Elysees avenue in Paris, on June 19, 2017, after a car crashed into a police van before bursting into flames. (Photo credit THOMAS SAMSON/AFP/Getty Images)