Kaiserslautern’s 3-0 victory over SC Freiburg in November last year is the top flight game under suspicion in Germany’smatch-fixing scandal, according to Germany’s Football Association (DFB).

The DFB also revealed that Robert Hoyzer, the referee at the centre of the case, had fixed or attempted to fix seven matches in the cup and lower leagues.

“We are talking about organised crime here,” Bundesliga chief Werner Hackmann told a news conference.

The Bundesliga first division match between Kaiserslautern and Freiburg, played on November 27, 2004, was refereed by Juergen Jansen, who has been implicated in the case by Robert Hoyzer but denies any involvement.

Hoyzer has named two more referees, Dominik Marks and Felix Zwayer, the DFB said.

“Naturally, the three referees will not be used until this is cleared up,” the DFB’s refereeing chief Volker Roth said in a statement.

“However, we work on the principle of presumption of innocence. If their innocence in this matter is established naturally they will return.”

DFB spokesman Harald Stenger said the two matches under suspicion involving Jansen were the Kaiserslautern-Freiburg first division game and the second division match between Dynamo Dresden and Unterhaching on November 21.

The two matches refereed by Marks were between Karlsruhe and Duisburg in the second division and the regional league game between Hertha Berlin Amateurs and Arminia Bielefeld Amateurs.

As well as the match-officials up to ten players are reported to have been implicated in the scandal.