France mobilises 7,000 troops for extra security patrols

French President Emmanuel Macron has ordered 7,000 soldiers to be mobilised for increased security patrols, his office said on Saturday, a day after a teacher was stabbed to death.

France was put on its highest security alert on Friday after a 20-year-old man fatally stabbed a teacher and gravely wounded two other people in an attack at a school in the city of Arras in northern France.

Macron's office said that the soldiers would be mobilised by Monday evening until further notice as part of an ongoing operation that regularly conducts patrols in major city centres and tourist sites.

The security alert comes as France hosts the Rugby World Cup and prepares to face South Africa on Saturday evening in their quarter-final.