Five French police officers were arrested on Tuesday over the death of a 27-year-old man in the southern city of Marseille in early July during nationwide rioting, prosecutors said.
The five police officers, all members of the elite Raid unit, were detained in Marseille for questioning in the probe over the death of Mohamed Bendriss.
Several civilians and police are also giving evidence as witnesses, prosecutors said.
The incident took place during the night of 1-2 July during violent protests in the centre of Marseille sparked by the death of Nahel Merzouk, 17, who was shot dead by a policeman on 27 June during a traffic check.
Bendriss, a married father of one, whose widow is expecting a second child, lost his life after feeling unwell while riding a scooter.
His autopsy showed traces on his chest of what could be the impact of a shot from a blast ball – known in French as an LBD and commonly used by the country's police.
The investigation is the latest controversy to target Marseille police.
Earlier this summer, a 22-year-old man called Hedi had to have part of his skull amputated after being beaten up and fired on with an LBD on 21 July by a group of men suspected to be police officers.
Four Marseille police officers have been charged over the incident.
Three have been released under judicial supervision.
The fourth has been remanded in custody for the duration of the investigation. His detention caused huge controversy within the French police.
Officers across the country went on sick leave as a sign of protest but a court last week rejected the appeal against his detention.
The officer admitted in court to firing a blast ball round, reversing an earlier denial, but said he did not see anybody injured. His lawyer added that there was no proof it was his round that had wounded Hedi.
The powerful police union, Alliance, said the ruling was "incomprehensible and very unfair".
(with AFP)