The French president Emmanuel Macron ordered the mobilization of 7,000 troops to increase security patrols, his office announced today, a day after killing of a teacher in an Islamist attack.

France was put on high alert on Friday after a 20-year-old man stabbed a teacher to death and seriously injured two others in an attack on a school in the northern French city of Arras.

Macron’s office announced that the soldiers will be mobilized from Monday evening until further notice. They will boost an ongoing operation that regularly patrols major urban centers and tourist spots.

The state of high alert has been declared as France host the Rugby World Cup and face South Africa in the quarter-finals tonight.

Interior Minister Gerald Darmanen said yesterday, Friday, that the attack in Arras is linked to the events in the Middle East, where Israel is carrying out a military offensive against Hamas militants who last Saturday carried out a bloody raid on Israeli territory.