Two persons weres killed and one seriously wounded in a knife attack in the Paris suburb of Trappes, a police source said.
The knife attacker was then shot down by police and killed, the source said.
Meanwhile, a French interior ministry source confirmed that the two killed in in the knife attack were mother and sister of assailant.
Earlier Reuters quoted a source as saying that: “The reason behind the attack and his profile are not known yet and are being looked into.”
On the other hand, ISIS the extremist group claimed t the knife attack that killed two people 30 Km outside the French capital on Thursday.
“The person who carried out the attack in Trappes, southwest of Paris, was an Islamic State fighter,” its propaganda channel Amaq said.
“He carried out the attack in response to calls to target subjects of the countries of the coalition” fighting IS, it said.
Trappes is an underprivileged town situated in an overall wealthy area west of Paris, with a population of around 30,000 and is part of the far suburbs of the greater Paris area.
Only a short drive from the wealthy area of Versailles, home to the world-famous Versailles Palace, the town is known for problems linked to poverty.
It has a large Muslim population and about 50 locals are suspected of having left France to fight for the ISIS extremist group in Syria and Iraq, French security sources have previously told AFP.