French police on Sunday detained relatives and friends of one of the seven gunmen and suicide bombers who killed at least 129 people in a wave of attacks in Paris claimed by ISIL terrorist group, as the investigation widened.

French police on Sunday detained relatives and friends of one of the seven gunmen and suicide bombers who killed at least 129 people in a wave of attacks in Paris claimed by ISIL terrorist group, as the investigation widened.

The first attacker to be named was 29-year-old Omar Ismail Mostefai, who was identified from a severed finger among the carnage at the Bataclan concert hall, the scene of the worst of the bloodshed with 89 killed.

Police detained six people close to Mostefai, including his father, brother and sister-in-law, judicial and police sources said.

French police also found a black Seat car that witnesses said was used in shootings at a bar and restaurant by one group of the attackers.

The vehicle was recovered from Montreuil, in the eastern Paris suburbs and was being scoured for evidence.