Former UEFA president Michel Platini has been arrested as part of an investigation into the awarding of the 2022 World Cup in Qatar. Known by the acronym OCLCIFF, the French police agency specializes in complex cases involving financial fraud, corruption and breaches of integrity.
The French investigation centres on alleged French intervention linked to Platini and former president Nicolas Sarkozy.
Platini is now serving a ban from all football-related activities after being found guilty of ethics breaches surrounding a £1.3m ($2m) "disloyal payment" from former Fifa president Sepp Blatter in 2011. Blatter has also always denied any wrongdoing.
Later FIFA's appeals committee reduced Platini's suspension to six years and in May 2016 the Court of Arbitration for Sport rejected the French official's appeal, leaving in force his six-year suspension.
Mr Platini was banned by Federation Internationale de Football Association for financial misconduct in relation to a $US2 million ($A2.9 million) payment authorised by Mr Blatter - a suspension due to expire in October.
A judicial official said former UEFA president Michel Platini has been arrested in relation to a corruption probe into the awarding of the 2022 World Cup to Qatar.
The ex-UEFA president said in 2015 he "might have told" USA officials he would vote for the United States bid.
According to the specialist magazine France Football, a "secret meeting" took place on November 23, 2010 at the Elysee Palace in Paris between Sarkozy, Qatar's then-Prince (now Emir) Tamim bin Hamad al-Thani, and Platini, at that time both UEFA president and vice-president of FIFA.
Platini had previously admitted that Sarkozy wanted him to influence a vote for Qatar but he denied that Sarkozy had anything to do with him voting for Qatar as a World Cup site.
"Following questioning, he was detained".
Like Platini, Dion was taken into custody.