A witness' mobile phone video of the incident, verified by the France Info channel, shows an officer pointing his gun into the driver's door of the stationary car. When the youth at the wheel suddenly drives off, the officer fires at close range, fatally wounding him.
Unrest spread to the Greater Paris region and several other French cities. Rioters set fire to vehicles and garbage cans during the night. Police officers and buildings were attacked with fireworks.
The officer involved in the shooting remains in police custody and is being investigated on suspicion of manslaughter.
On Thursday, a funeral march is planned in Nanterre to honour the memory of the killed youth.
