Move comes after three killed in the French city of Nice by a knifeman who struck on Thursday morning.
France has raised its terror threat alert to the highest possible level after a spate of attacks in a single day left three people dead and others injured. A woman was beheaded at a church in the city of Nice by a knifeman who killed a further two people and left others injured, before he was shot and arrested by police on Thursday morning. The murder spree came hours before a man wielding a gun was shot dead by police after threatening passers-by in the town of Montfavet, near the French city of Avignon, some 160 miles away from Nice. In both incidents, the attackers are alleged to have shouted « Allahu Akbar », meaning God is great, a phrase often used by Islamist extremists before launching a deadly assault.
