The French government said Sunday that hundreds more had been arrested in a fifth night of rioting sparked by the police killing of a 17-year-old, as police deployed reinforcements to flashpoint cities around the country.

Protesters, mostly minors, have torched cars, damaged infrastructure and clashed with police in an outpouring of rage since an officer shot Nahel M. point blank as he attempted to flee a traffic stop on Tuesday.

The killing was captured on video, which spread on social media and fueled the anger over police violence against minorities, exposing severe racial tensions in France.