French police are investigating an alleged racist assault on two Jewish men, one of whom lost a finger.
The 29-year-old and his brother, aged 17, said they were beaten up on Tuesday in the Paris suburb of Bondy. Their injuries included blows with a hacksaw, French media reported.
The alleged assault happened after the pair, wearing Jewish skullcaps, were forced to stop their car.
Bondy is near Aulnay-sous-Bois, an area hit by anti-police rioting this month.
No suspects have been detained yet in connection with Tuesday's assault.
Bondy is part of Seine-Saint-Denis district, north-east of Paris, where violence erupted earlier this month because of the alleged rape of a young black man by police.
The man, called Theo, left hospital this week after emergency treatment. Violence also rocked some other suburbs.
Seine-Saint-Denis has a high density of immigrants, many of them Muslims. The district suffers from high unemployment and urban deprivation.
A French group combating anti-Semitism, called BNVCA, said the two Jews were racially abused first by two assailants who had followed them in a van. Then by more assailants who joined in the attack outside a shisha bar, BNVCA reported, quoting the victims' father.
Anti-Semitism has been a feature of Islamist attacks in France in recent years. An Islamist gunman killed four people in a Jewish supermarket during the Paris attacks in January 2015, which included the massacre at Charlie Hebdo magazine.
In 2012 a Jewish school was targeted by gunman Mohammed Merah in a shooting spree that left seven people dead in Toulouse and nearby Montauban.