The beIN Media Group says it "refutes all accusations" after the Swiss attorney general's office (OAG) opened criminal proceedings against the company's CEO Nasser Al-Khelaifi and former FIFA secretary general Jerome Valcke.
The OAG announced on Thursday it is investigating the awarding of World Cup media rights for the 2026 and 2030 tournaments.
The proceedings relate to an ongoing OAG investigation into Valcke that began in March 2016 and was opened on "suspicion of various acts of criminal mismanagement".
Findings obtained in that process have led to a separate line of inquiry involving PSG president Al-Khelaifi.
The OAG stressed "no one has been on remand" and "the presumption of innocence applies".
In a statement made later in the day, beIN confirmed its French offices had been searched but rejected any suggestion of wrongdoing.
"Following a request by the office of the Attorney General of Switzerland (OAG) the beIN SPORTS office in Boulogne-Billiancourt (France) were searched this morning," the statement read.
"The employees on site cooperated with the authorities until the end of the search.
"beIN MEDIA GROUP refutes all accusations made by OAG. The company will fully cooperate with the authorities and is confident as to the future developments of this investigation."
Addresses in France, Greece, Italy and Spain have been raided in relation to the investigation.
Valcke - who was interviewed on Thursday - is in the process of appealing against his 10-year ban from football at the Court of Arbitration for Sport.
The Frenchman was found guilty of a series of breaches of FIFA's code of ethics and was sacked in January 2016, though he has always denied any wrongdoing.
|Messi and Ronaldo reveal World Cup kits|
|Nara praises Inter project as Icardi talks continue|
|Best to lead Ireland in World Cup after signing extension|
|Marseille´s Rami wants to ´tickle´ PSG|
|Fury targeting Louis´ record for title defences|
|Salah can push on to Messi´s level - Robertson|
|Rabada free to play in rest of South Africa-Australia series|
|F1 2018: Halo splits opinion ahead of Australia debut|
|Iniesta better than last year – Lopetegui|
|Federer yet to decide on clay-court season|
|Okon quits as Mariners head coach|
|LeBron triple-double powers Cavs past Bucks as Love returns|
|Lopetegui: Morata must earn World Cup spot|
|Ronaldo has asked about China – Scolari|
|Ebron signs two-year deal with Colts|
|Spieth, Reed to do battle in Match Play|
|Rangers´ Perez slaughtered, ate bull that caused broken elbow|
|Bills improve offensive line with Bodine, Newhouse|
|Braves phenom Acuna to start season in minors|
|Chargers add Pouncey on two-year deal|
|Ronaldo: I always show I´m the best|
|Joshua would love another Whyte tear-up, says Hearn|
|Manchester United not in Jorginho talks, says Napoli star´s agent|
|Hazard will not be false nine for Belgium, says Martinez|
|Bancroft confident on Starc and Marsh fitness|
|Mayweather to apply for MMA licence|
|Martial agent will not guarantee Manchester United stay|
|Del Potro and Djokovic on early collision course at Miami Open|
|Siemian swaps Broncos for Vikings|
|Broad chomping at the bit to bowl at Black Caps´ Taylor|
|Ronaldo slams ´fake news´ amid latest tax case claims|
|Van Dijk and Gundogan expect tough City-Liverpool tie|
|VAR to be introduced in Eredivisie|
|Di Biagio sees bright Italy future with Cutrone and Chiesa|
|Koeman won´t rule out Van Persie Netherlands return|
|I ate badly for years – how Messi solved his vomiting problem|
|England and Bath´s Watson out for the season|
|McLaren issues ´have been addressed´ ahead of F1 season opener|
|Tuchel feels he would still be at Dortmund without bomb attack|
|Pogba shows off new haircut as Ben Yedder trolls Man United star|
|Pogba cannot be happy but must focus on France, says Deschamps|
|Samuels slogs Windies closer to World Cup qualification|
|Having Rabada in third Test massive - Elgar|
|Cavs coach Lue steps away from job due to health reasons|
|Debuchy disappointed to be left out of latest France squad|
|Barton rejects England´s World Cup chances|
|Hamilton can become greatest F1 driver in history - Kovalainen|
|Sevilla coach Montella interested in Italy job|
|Football brain lacking, poor attitude and fourth choice – The Mourinho-Shaw saga at Manchester Unite|
|I´ve had enough - Pietersen confirms retirement|
|UEFA charges Marseille and Lyon for Europa League trouble|
|Broad ready to do damage in New Zealand series|
|Injured Chiellini out of Italy squad|
|Toulon-bound Webb out for rest of season|
|Buffon cites Astori among reasons for Italy return|
|Welbeck faces no action over alleged dive against Milan|
|Charnley switches back to league to join Warrington|
|Barcelona? I´m staying with PSG, insists Marco Verratti|
|Bastian Schweinsteiger & Ana Ivanovic announce birth of son|
|The numbers behind Cristiano Ronaldo´s 50 hat-tricks|
|Woods relishing end to frustrating Augusta absence|
|Consistency the only thing stopping me from being the best, claims Depay|
|Guardiola second to none tactially, says Man City midfielder Gundogan|
|McIlroy: Bay Hill win a huge confidence boost for Masters|
|F1 2018 Pre-Season Report: Mercedes|
|F1 2018: The best Opta facts ahead of the new season|
|Liverpool captain Henderson ponders Salah and Suarez comparison|
|Messi worried by the uncertainty retirement brings|
|F1 2018 Pre-Season Report: Ferrari|
|Hunt handed ban and fine but cleared to return|