Nasser Al-Khelaifi is at the centre of a TV rights deal storm, after Swiss prosecutors opened criminal proceedings against the Paris-Saint Germain chairman.
A Swiss court has opened a corruption probe against Nasser Al-Khelaifi, the Qatari businessman and chief executive of Paris Saint-Germain, and former Federation Internationale de Football Association secretary general Jerome Valcke.
The Office of Switzerland's Attorney General (OAG) confirmed that the investigation concerns alleged bribes offered to Valcke in return for the Qatari-owned BeIn Sports being awarded the 2026 and 2030 World Cup rights.
Criminal proceedings were opened on March 20 against Valcke, Al-Khelaifi and a businessman in the sports rights sector on suspicion of bribery of private individuals, fraud, criminal mismanagement and forgery of a document, the OAG said on Thursday.
Al-Khelaifi is alleged to have offered "undue advantages" to Valcke - FIFA's CEO-like secretary general from 2007 until his firing in January 2016 - for the award of media rights in "certain countries" for the 2026 and 2030 World Cup.
Valcke was interviewed as a suspect in Switzerland, the OAG said.
"The company will fully co-operated with the authorities and is confident as to the future development of this investigation".
The Guardian has approached representatives for Khelaifi and Valcke for comment.
The case stemmed from a wider investigation of Fifa's business that saw criminal proceedings opened against Valcke in March 2016.
Valcke was the right-hand man to disgraced former Federation Internationale de Football Association president Sepp Blatter, before being banned for 10 years over an alleged ticket scam at the 2014 World Cup.
This week the court of arbitration for sport in Lausanne commenced hearing Valcke's appeal against his ban by Fifa's ethics committee.
The probe extends scrutiny of world soccer, has been in turmoil since USA prosecutors said in 2015 that soccer officials had taken nearly $200 million in bribes from sports-marketing executives in the Americas seeking media and marketing rights to tournaments.