Police spokesman Micky Rosenfeld said Monday that fraud investigators questioned Israel Football Association Chairman Avi Luzon for eight hours on Sunday. He said Luzon is suspected of fraud, breach of trust and abuse of power.
Police are looking into whether referees were assigned to certain games in order to influence results. Dozens of executives, players, coaches and referees have already been questioned.
Luzon denies all the charges. In a statement, the association says he is co-operating fully with the ongoing investigation. It asked police to act sensitively "to prevent needless public damage."
Luzon is a member of governing bodies FIFA and UEFA.