Paul Pogba's brother is in police custody with four others as part of an investigation into an alleged plot to extort the former Manchester United star.
Mathias Pogba went to see Paris police on Wednesday afternoon and was held for questioning, an official close to the investigation said.
The prosecutor opened a case last month into allegations that Pogba's brother and childhood friends were demanding €13m from the player.
Mathias Pogba, 32, has denied the claims and his lawyer said last week he wants "more than anything else" to ease the situation with his brother.
The case came to light after he released a video saying he would reveal "great revelations" that would make fans and teammates look at his famous brother in a different light.
He also promised to reveal "very important things" about the Paris Saint-Germain player Kylian Mbappe, as well as questions of "integrity" regarding Pogba's agent, Rafaela Pimenta.
Paul Pogba's lawyers said the video was "not a surprise" and that it followed "threats and attempts of extortion by an organised gang".
Pogba, 29, now plays for Juventus after a disappointing spell at Manchester United.
His brother has played in some of European football's lower leagues, appearing for the likes of Crawley Town and Partick Thistle.
Latest Stories
-
Elon Musk to spend election night with Donald Trump
17 mins -
UCL: Real Madrid lose to AC Milan in second straight home defeat
28 mins -
Accusations fly in Spain over who is to blame for flood disaster
40 mins -
Economy is growing below potential – IEA
44 mins -
UCL: Gyokeres hat-trick as Amorim’s Sporting thrash Man City
47 mins -
Equatorial Guinea VP warns against office sex after viral videos
49 mins -
Netflix Europe offices raided in tax fraud probe
1 hour -
UCL: Diaz nets hattrick as Liverpool beat Leverkusen
1 hour -
Israel PM Netanyahu fires defence minister Gallant
1 hour -
From Arizona to Pennsylvania, Americans embrace calm before election’s storm
2 hours -
Sam Jonah calls for urgent action against ‘pervasive’ corruption in Ghana
2 hours -
‘Pawn’ movie premiere ends with great reviews
2 hours -
Gospel musician Afia Ayiwah out with ‘Jesus Reigns’
2 hours -
We’ve made significant strides in judiciary – Akufo-Addo
2 hours -
West African School on Air Quality and Pollution Prevention to enable air quality forecasting in Ghana
3 hours