Nineteen people have been arrested in a series of police raids on suspected Islamists, French President Nicolas Sarkozy told French radio Friday morning.

The raids come a week after gunman Mohammed Merah, who killed seven people, was shot dead after a long siege in the southwestern city of Toulouse.

The arrests took place in Toulouse, Marseille, Nantes, Lyon and the Ile de France region, around Paris, the Interior Ministry said.