Four people were killed and four others were injured in a shooting on Monday night in Philadelphia, and a suspect was taken into custody, local news media outlets reported, citing police.
Discontent is rising in some Paris suburbs over the killing of a 17-year-old man by police on Tuesday after he failed to comply with a traffic stop ("refus d'obtemperer" in French).
Ten people were taken to hospitals by police, and another 19 took themselves to hospitals, Fox 45 reported, adding that a witness said they heard 20 to 30 shots fired.
France deployed 45,000 police officers and some armoured vehicles on the streets on Saturday as riots rocked French cities for a fourth night over a teenager's fatal shooting by an officer during a traffic stop.
French President Emmanuel Macron will convene his cabinet for a second crisis meeting in two days on Friday, after the most destructive night of rioting yet in protest at the fatal shooting of a teenager by police.