Turkish prosecutors have questioned Emre Belozoglu, the captain of the Turkish national team, in a match-fixing probe that also involves his club Fenerbahce.

Belozoglu says he was released without charges on Tuesday. He refused to answer questions, saying he was tired and had "spoken enough" during his testimony.

Prosecutors also questioned Fenerbahce manager Ekrem Okumus along with an Ankaragucu player and a sports commentator.

More than 30 people, including Fenerbahce president Aziz Yildirim, have been charged in the probe that involves 19 games last season. Fenerbahce faces the threat of losing its league title and being relegated.

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