France's interior minister has ordered the closure of four mosques that allegedly espoused a 'radical ideology' - the latest shutdowns among dozens since the Paris attacks nearly a year ago.

Africa's largest city is closing dozens of mosques, churches and nightclubs in a bid to reduce noise levels for its 20 million residents.

Boko Haram extremists have gunned down nearly 100 Muslims praying in mosques in north-eastern Nigeria.