A CHAMPIONS League tie played believed to have involved English Premier League giants Liverpool is among hundreds being investigated across the world for alleged match fixing.
Europol - the European Union's law enforcement agency - did not reveal the identity of the game it was investigating but said it was played in England.
The UK's Sun newspaper, however, reported it was believed to have been Liverpool's 2009 clash with Hungarian side Debrecen, which the Reds won 1-0 at Anfield.
It also reported Vukasin Poleksic, the Hungarian side's keeper that night, was banned for two years after failing to report a criminal group had approached him before Debrecen's game against Fiorentina - another club in Liverpool's Champions League group that year.
European police said an organised crime syndicate based in Singapore was co-ordinating the match-fixing operation.
Some 425 match officials, club officials, players and criminals are suspected of being involved in the 680 games believed to be corrupt.
Director of Europol, Rob Wainwright, said investigations had also uncovered other "corrupt" matches included World Cup and European Championship qualifiers and "several top football matches in European leagues".
The Europol boss said in total 380 suspicious matches were in Europe and a further 300 in Africa, Asia and south and central America.
"This is the work of a suspected organised crime syndicate based in Asia and operated with criminal networks around Europe," Wainwright said.
"It is clear to us this is the biggest-ever investigation into suspected match-fixing in Europe.
"It has yielded major results which we think have uncovered a big problem for the integrity of football in Europe.
"We have uncovered an extensive criminal network."
In total, 30 countries and close to 700 matches worldwide were examined.
Many of the allegations involved matches in lower divisions around Europe.
Most cases have been discovered in Germany where 14 people have been jailed for a total of 39 years.
Criminal convictions have also been secured in Finland, Hungary, Slovenia and Austria.