French president François Hollande has spoken out against an "unbearable" assault on a young couple near Paris which ministers say was anti-Semitic, reports the BBC.
The two victims, a woman aged 19 and her boyfriend, 21, were tied up in his family's flat and the woman was raped.
Their lawyer said three men had burst into the flat, telling the boyfriend: "You Jews, you have money."
Two of the alleged attackers have been detained and a suspected accomplice is also being held.
They have been placed under formal investigation and are also suspected of beating up an elderly Jewish man last month.
France has the largest Jewish community in Europe and a recent report said there had been a significant increase in anti-Semitic acts there this year. It is also home to the largest Muslim population in Western Europe, and there was a spike in attacks in the summer during Israel's conflict with Palestinian militants in Gaza.
A group representing France's Jewish communities, the CRIF, warned that France was suffering from a "cancer" and said the fight against anti-Semitism had become a "national cause".