Three men have been arrested in the south of France on suspicion of conspiring to commit terrorist activity. A police raid in a house in Marignane, close to Marseille, found a number of weapons and explosives. Neighbours say a black jihadist flag had been flying from the roof of the house. It comes a year after Islamist extremist Mohammed Merah killed 7 people, five outside a Jewish school in the south of France; French authorities fear more attacks are being planned on French soil.