England captain Michael Vaughan believes match-fixing is still going on at the highest levels of cricket.
Vaughan has a "gut feeling" that match-fixing still exists
Vaughan said he had no personal experience of it but added "my gut feeling is that there is still some kind of corruption in the game".
He was speaking amid speculation that Pakistan coach Bob Woolmer may have been murdered because he was about to expose match-fixing.
Woolmer was strangled after Pakistan lost to Ireland in the World Cup.
I have never been approached and hopefully to God never will be because we don't want to see that in the game
Vaughan added: "I haven't studied it but there are bad things I've seen in certain passages of games.
"It's very hard to clear the whole of cricket from match-fixing."
Match-fixing has blighted cricket over the last 15 years with five former players receiving life bans for corrupting the game, including former South Africa captain Hansie Cronje and India skipper Mohammad Azharuddin.
The other players given life bans were Ajay Sharma (India), Salim Malik and Ata-ur-Rehman (Pakistan).
Rehman's life ban was subsequently revoked in November 2006 to allow him to play club cricket in England, where he now has British citizenship.
South African Herschelle Gibbs was suspended for six months by his national board in 2000 after admitting he agreed to under-perform in a one-day international in exchange for money.
And Australians Shane Warne and Mark Waugh were fined in 1994 after accepting money from a bookmaker for supplying pitch information during a tour to Sri Lanka, a matter which only came to light four years later.
Vaughan made his Test debut against South Africa in Johannesburg in 1999-2000, a match revealed later to have been fixed by Cronje.
"I have never had any incidences or been involved in any conversations regarding the fixing of a game of cricket," Vaughan said.
"I have never been approached and hopefully to God never will be because we don't want to see that in the game.
"I played in the Centurion Test that was fixed by Hansie Cronje but I was just a young lad and never thought anything was untoward."
Lord MacLaurin, the former chairman of the England and Wales Cricket Board, echoed Vaughan's comments.
He told BBC Five Live: "Wherever you look, whether you look at cricket or you look at business or wherever you look, you do see corruption. That is a way of our life unfortunately, so I wouldn't take cricket out of the equation."