Paris Attackers Known To Security IS Claim Responsibility

Paris prosecutor's office spokeswoman Agnes Thibault-Lecuivre said police have arrested some of Mostefai's family members.

But she declined to give further details of how many people had been detained.

Paris prosecutor Francois Molins said he had a criminal record and was known to security services but had not spent time in jail.

Mr Molins said: "He caught police's attention due to the violation of public power. From 2004 to 2010, he was pronounced guilty eight times, but has never been in prison.

"In 2010, he was blacklisted by the police due to extreme behaviours, but never been classified into any illegal extremist groups."

Three teams of attackers in identical explosives vests appear to have co-ordinated the "act of barbarism" that left a total 129 people dead and 352 injured across the French capital.

Three other people, including a French citizen, have been arrested in connection with the atrocities. They were detained at the Belgian border.

Three others were arrested in police raids in Molenbeek, an immigrant area of Brussels.

Belgian Prime Minister Charles Michel said at least one of those held in Molenbeek was thought to have spent the previous night in Paris.

Two cars registered in Belgium were impounded close to scenes of some of the violence in Paris, including the Bataclan.

An unnamed French official said on Sunday a Seat car with suspected links to the attacks was found in the Paris suburb of Montreuil - they could not confirm if this was the black Seat linked to the attacks on the Le Carillon Bar and Le Petit Cambodge restaurant.

Islamic State has claimed responsibility for the near-simultaneous attacks and has warned that France would remain at the "top of the list of targets" over its airstrikes on IS territory in Syria and Iraq.