More than 1300 people have been arrested in France during a fourth night of rioting as family and friends of Nahel M, whose shooting by police sparked the unrest, gathered for the teenager's funeral in the Paris suburb where he died.
The government deployed 45,000 police and several armoured vehicles overnight to tackle the worst crisis of President Emmanuel Macron's leadership since the "Yellow Vest" protests that brought much of France to a standstill in late 2018.
The interior ministry said on Twitter on Saturday 1311 people had been arrested, compared with 875 the previous night, although the violence was "lower in intensity".
Nahel, a 17-year-old of Algerian and Moroccan descent, was shot by a police officer during a traffic stop on Tuesday in the Paris suburb of Nanterre.
Several hundred people lined up on Saturday to enter Nanterre's grand mosque, which was guarded by volunteers in yellow vests.
Salsabil, a young woman of Arab descent, said she had come to express support for the family.
"I think it's important we all stand together," she told Reuters.
Marie, 60, said she had lived in Nanterre for 50 years and there had always been problems with the police.
"This absolutely needs to stop," she said.
"The government is completely disconnected from our reality."
The shooting of the teenager, caught on video, has reignited longstanding complaints by poor and racially mixed urban communities of police violence and racism.
Macron, who postponed a state visit to Germany that was to begin on Sunday due to the unrest, has denied there is systemic racism in French law enforcement agencies.
Looters have ransacked dozens of shops and torched 2000 vehicles since the start of the riots, which have spread to cities such as Marseille, Lyon, Toulouse, Strasbourg and Lille.
More than 200 police officers have been injured, Interior Minister Gerald Darmanin said, adding the average age of those arrested was 17.
Friday night's arrests included 80 people in Marseille, home to many people of North African descent.
Social media images showed an explosion rocking the old port area of the southern city, but no casualties were reported.
Rioters in France's second-largest city had looted a gun store and stole hunting rifles, but no ammunition, police said.
Mayor Benoit Payan called on the government to send extra troops to tackle "pillaging and violence" in Marseille, where three police officers were wounded on Saturday.
In Lyon, France's third-largest city, police deployed armoured personnel carriers and a helicopter, while in Paris, they cleared protesters from the Place de la Concorde.
Lyon Mayor Gregory Doucet has also called for reinforcements.
Darmanin had asked local authorities to halt buses and trams, while Macron urged parents to keep children at home.
A tram was set alight in the eastern city of Lyon and 12 buses were gutted in a depot in Aubervilliers, northern Paris.
The unrest has revived memories of nationwide riots in 2005 that forced then-president Jacques Chirac to declare a state of emergency after the death of two young men electrocuted in a power substation as they hid from police.
"Quite simply, we're not ruling out any hypothesis and we'll see after tonight what the President of the Republic chooses," Darmanin said on Friday asked whether the government could declare a state of emergency.
Players from the national soccer team issued a rare statement calling for calm.
"Violence must stop to leave way for mourning, dialogue and reconstruction," they said on star Kylian Mbappe's Instagram account.
Events including two concerts at the Stade de France on the outskirts of Paris were cancelled, while Tour de France organisers said they were ready to adapt to any situation when the cycle race enters the country on Monday from Spain.
Macron left a European Union summit in Brussels on Friday early to attend a second cabinet crisis meeting in two days and asked social media to remove "the most sensitive" footage of rioting and disclose identities of users fomenting violence.
Darmanin met representatives from Meta, Twitter, Snapchat and TikTok.
Snapchat said it had zero tolerance for content that promoted violence.
