French police raid Paris suburb

More than 300 French police took part in the operation

French police have held 15 people in raids near Paris where four policemen were attacked earlier in March.

More than 300 police took part in the dawn operation at a housing project in Grigny, south of the capital.

The raids followed the 2 March incident in the area in which the four policemen had suffered shotgun pellet wounds.

Last month, police arrested more than 30 people in Villiers-le-Bel, another Paris suburb, targeting the suspected ringleaders of riots last November.

The 2007 riots began in Paris's mainly immigrant suburbs after two teenagers died in a crash with a police car.

More than 100 policemen were injured at the time, some seriously.

The clashes were a bitter reminder of the nationwide riots of 2005, when France was forced to call a state of emergency after weeks of violence in its poor and mainly immigrant suburbs.