Police have raided homes in the Paris area and arrested Paris Saint-Germain supporters involved in violence which marred the club's title celebrations.
Le Parisien reported eight fans while L'Equipe claimed nine, aged between 19 and 34, were arrested on Tuesday after being identified by witness testimony, photos and video footage.
The group, six of whom have previously served stadium bans, are reportedly members of three supporter associations - the K-Soce Team, Kar Sud and Liberty for Season-Ticket Holders - which have been in conflict with PSG since 2010 when former president Robin Leproux introduced measures to rid the club's support of its violent element, many of whom had ties to extreme political groups.
Le Parisien added more arrests were expected as a consequence of the incidents which exploded during the presentation of the Ligue 1 trophy to the PSG squad at the Trocadero, opposite the Eiffel Tower, on May 13.
Some 39 arrests were made on the night and 30 people were left with injuries after supporters went on the rampage, pelting police with projectiles and smashing shop windows and damaging property.
The incidents meant a cruise down the River Seine by the PSG squad to celebrate the club's first Ligue 1 triumph in 19 years had to be cancelled, while PSG president Nasser Al Khelaifi issued a strong condemnation, terming the evening "a disaster" for the club's image.