The Supreme Court of the Canton of Zug has ruled that FIFA must make public all documents pertaining to the controversial ISL case.

According to the BBC, the documents show former FIFA president Joao Havelange and Brazilian Football Confederation (CBF) president Ricardo Teixeira took millions of dollars in kickbacks from bankrupt World Cup broadcaster ISL.

The duo reportedly admitted to taking kickbacks in June 2010 and repaid the money on condition that their identities remained anonymous.

World football's governing body had initially planned to release the information at an  executive committee meeting in Japan on December 17, but legal action taken by a third party involved in the scandal forced it to postpone the decision for an indefinite period.

FIFA president Sepp Blatter maintains the Zug court cleared him of any wrongdoing, but the files could potentially shed some light on whether he was aware of kickbacks being paid to top officials in the organisation.

FIFA has 30 days to appeal against the decision to the Swiss Federal Supreme Court, located in Lausanne.