Gunmen fire on police in Marseille

French police sealed off a housing estate in Marseille after hooded gunmen opened fire on a police car with Kalashnikov rifles in what a senior local official suggested was an incident related to drug crime.

France has been on high alert following Islamist attacks in Paris last month that killed 17 people.

Last week, two soldiers protecting a Jewish organisation and radio station were wounded in a knife attack in Nice.