Paris: The French authorities on Thursday informed that a man killed two people, reportedly his mother and sister, and wounded a third person with a knife in the run-down south-western suburb of Trappes, close to Versailles. The knife attacker was then shot dead by police.
The Islamic State group, meanwhile, claimed its hand behind the attack but offered no proof.
Some reports say the man threatened to kill police and shouted “Allahu Akbar” (“God is greatest” in Arabic).
France has been on constant alert for jihadist terrorist attacks since the Paris attacks of 2015.
The suburb is known for gang violence and poverty. It also has Islamists among its large Muslim population, with 50 local people suspected of having left France to fight for the Islamic State group in Syria and Iraq, according to security sources quoted by AFP news agency.
Prasanta Patnaik