French police have been criticised for detaining an eight-year-old who claimed to support the men who attacked the satirical weekly Charlie Hebdo.

A French man wanted in connection with deadly terrorist attacks in Paris has been extradited from Bulgaria to France, where he is facing charges of links to terrorism, judicial officials say.

Up to 10,000 troops are to be deployed to protect sensitive sites.

French President Francois Hollande has called on the country to “remain vigilant” as the hostage crisis which started at the Charlie Hebdo magazine massacre came to a bloody end with the loss of at least 20 lives.