Paris, France - Two petrol bombs have been thrown at a synagogue north of Paris, police have said, days after another French synagogue was attacked.
Police in the Seine-Saint-Denis region said no injuries were caused, but a restaurant next door to the synagogue was damaged.
Interior Minister Michele Alliot-Marie said the attack was "intolerable".
The incident came amid tensions in France over the violence between Israel and Hamas in Gaza, now in its 17th day.
Ms Alliot-Marie vowed to find and punish those who carried out the attack in Saint-Denis on Sunday.
French officials have been keen to stress to Jewish and Muslim community leaders that the unrest in Gaza should not lead to violence in France.
Protests against Israel's military action in Gaza attracted more than 100,000 people in France during the weekend.
In last week's attack, a burning car was rammed into a synagogue in the south-western French city of Toulouse.
The car, packed with a petrol bomb, was set alight and then pushed into the synagogue door by a second car.
No-one was hurt in that attack.