France is preparing to expel 231 foreigners on a government watch list for suspected extremist religious beliefs.
Radio Europe 1 reported on Sunday, two days after a Russian-born citizen beheaded a teacher.
The French Interior Ministry, which is responsible for expels foreigners, declined to comment.
President Emmanuel Macron's centrist government has come under pressure from conservative parties and the right to take a tougher stance against citizens he sees as posing a security threat.
Macron held a Defense Council meeting with senior cabinet ministers on Sunday.
Earlier a man armed with a knife on Friday killed a high school history teacher by slitting his throat in front of the school where he teaches on the outskirts of Paris, police said.
We consider the attack an act of terrorism. The attacker was shot dead by police on patrol nearby.
The teacher shows cartoons of the Prophet Muhammad to his students in the class, which Muslims see as blasphemy, according to police sources.
French anti-terror prosecutors said they were investigating the attack, which took place at Conflans Sainte-Honorine, northwest of Paris.
President Emmanuel Macron arrived at the scene on Friday evening.
French broadcaster BFMTV reported that the suspected attacker was 18 years old and born in Moscow.
The incident echoes an attack five years ago on the offices of the satirical magazine Charlie Hebdo that published caricatures of the Prophet Muhammad. The publication of caricatures of the Prophet Muhammad caused problems in French society.
Less than a month ago, a Pakistani man used a butcher knife to attack and injure two people smoking outside the office where Charlie Hebdo was based at the time of the 2015 attack.
In Friday's attack, police sources said that witnesses heard the attacker shout "Allahu Akbar", or "God is great." A police spokesman said the information was being checked.
Another police source also said that the victim was beheaded in the attack, but this has not been confirmed. The attack took place on the street in front of the secondary school where the victim worked.
France attacked "Tonight, France was attacked, a teacher was brutally murdered," wrote French Education Minister Jean-Michel Blanquer on his Twitter account.
"Our unity and our determination are our only response to this act of terrorism," a Twitter thread posted on October 9 alleged that a history teacher at Conflans Sainte-Honorine showed cartoons of the Prophet Muhammad to his students.
The thread contains a video of a man saying his daughter, a Muslim, is one of the students in the class. He was shocked and irritated by his teacher's actions. The man in the video urged Twitter users to complain to the authorities. (Antaranews)