(CNN) -- The England cricket team will commence legal action against Pakistan Cricket Board (PCB) chairman Ijaz Butt, unless they receive a "full and unreserved apology" for match-fixing allegations he made against English players.
Butt said he had heard from bookmakers that some players were paid to lose Friday's one day international against Pakistan, claims the England team vehemently denied.
A statement on the England and Wales Cricket Board's (ECB) website said: "The ECB and the PCA (Professional Cricketers' Association) today confirmed that a pre-action letter has been sent on behalf of the England cricket team to Ijaz Butt.
"The letter seeks a full and unreserved apology. Mr Butt has been advised that if a satisfactory response is not received, legal proceedings will be commenced against him without further notice."
Speaking to CNN on Monday, Mr Butt stood by the accusations which have prompted the ECB to take action.
"Currently there is a lot of talk in the bookies circle that some of the England players were involved in losing the match to Pakistan.
"This is my statement and I stand by this statement."
The Test series between the two countries was marred by controversy, with four Pakistani players questioned by British police regarding "spot-fixing" allegations during the fourth Test at London's Lord's cricket ground.
Three of the men, Salman Butt, Mohammad Aamer and Mohammad Asif, have subsequently been suspended by the International Cricket Council (ICC), until the investigation has been resolved.