"We will unwaveringly continue our fight for clean football so that allegations that undermine trust in Turkish football are cleared up," said the country's Justice Minister, Akin Gürlek, in a statement.
In addition to chairman Gündogdu, the vice-chairman of the referees' committee is also among those arrested. Among other things, the investigation concerns interference in how referees are classified and assigned to matches.
Turkey was rocked last year by a gambling scandal that saw 149 referees suspended for alleged involvement in illegal betting. More than a thousand players were also banned, including 25 from the top division.
The Justice Minister has not said that there is any connection between the gambling scandal and the current investigation.
