Galatasaray says one of its top officials is assisting police with an inquiry into alleged match-fixing.

Galatasaray spokesman Sedat Dogan says club official Bulent Tulun was helping police with their queries. His statement came after news reports said police were searching club premises.

More than 30 people have been charged in the probe that involves 19 games last season and has implicated league champion Fenerbahce as well as Besiktas and Trabzonspor. Fenerbahce president Aziz Yildirim has been jailed and the club faces relegation and the threat of losing its league title.

The Turkish Football Federation pushed back the start of the season for more than a month until Sept. 9 because of the probe.