A 23-year-old man has been placed under investigation and remanded in custody for his suspected role as an accomplice of the gunman who killed a police officer and wounded two others in an attack last month on a police van parked on the Champs-Elysées avenue in central Paris.
A German tourist was also hurt in the attack during the evening of April 20th, three days before voting began in France's presidential elections, which the Islamic State group claimed responsibility for.
The gunman, French national Karim Cheurfi, 39, was shot dead by police. Cheurfi, from the Paris region, had previously served a prison sentence for a series of shootings in which he had already targeted police officers.
Islamic State group, meanwhile, identified the gunman as Abu Yousif al-Belgiki, meaning Abu Yousif 'the Belgian'.
DNA from the arrested man, who has not been named, was found on the Kalashnikov rifle used by Cheurfi, judicial sources said.
A pump-action shotgun and other weapons were also found in Cheurfi's car on the night of the attack.
Reporting by Mediapart.