Spanish second division clubs Las Palmas and Rayo Vallecano, plus seven professional footballers, are to be investigated over allegations about betting on matches.
The Spanish Football Federation (RFEF) will conduct the inquiry after a tip-off from UEFA.
“The RFEF have started a disciplinary enquiry into Las Palmas, Rayo Vallecano and various footballers from other teams to investigate the participation of professional footballers in betting on matches,” Las Palmas said.
Las Palmas listed the names of the players – none of whom are in their squad – in a statement on its website. Goalkeeper Javier Lopez Vallejo of promoted La Liga club Real Zaragoza and Rayo striker Piti were the highest profile players named.
Zaragoza were unavailable for comment, but Rayo confirmed they had been notified of the investigation into their club and player.
In November, Uefa named five clubs that it wanted to investigate following allegations of match-fixing.
Also last month, German prosecutors revealed they were probing possible match-fixing at about 200 games, which included Uefa’s original 40, played in Germany, Belgium, Switzerland, Croatia, Slovenia, Turkey, Hungary, Bosnia-Herzegovina and Austria.
Thirty-two matches in Germany are under suspicion.
Uefa has met with the national football associations of Austria, Belgium, Bosnia and Herzegovina, Croatia, Hungary, Slovenia, Switzerland and Turkey to discuss the matches under investigation.