Pakistan's scandal-tainted cricketers are the subject of a new corruption probe after suspected irregularities in the third one-day international with England, officials confirmed on Saturday.
The International Cricket Council (ICC) said it had launched an investigation into a "certain scoring pattern" that emerged during Pakistan's victory over England at the Oval on Friday.
It followed a report by The Sun newspaper, which claimed to have been made aware of details of Pakistan's innings before the match had got underway.
The paper tipped off cricket authorities, who then watched as the scoring patterns in two suspect overs emerged as predicted, The Sun report said. The overall result of the match was not believed to be fixed, the report added.
ICC chief executive Haroon Lorgat said the new allegations - which follow the suspension of three Pakistan players for alleged involvement in 'spot-fixing' - warranted further investigation.
"Following information received by the ICC from a British newspaper and its source, the ICC now believes a full investigation is warranted," an ICC statement read.
Lorgat added: "A source informed The Sun newspaper that a certain scoring pattern would emerge during certain stages of the match and, broadly speaking, that information appeared to be correct.
"We therefore feel it is incumbent upon us to launch a full enquiry into this particular game although it is worth pointing out at this stage that we are not stating as fact that anything untoward has occurred. Only in the fullness of the investigation can that be established.
"The ICC maintains a zero-tolerance approach to corruption in cricket and, as a matter of course, follows up on all credible information that is received, whatever the source.
"Any player or official found guilty of an offence will face the full rigour of our robust Anti-Corruption Code so that we can ensure the integrity of the sport is maintained."
The England and Wales Cricket Board (ECB) said on Saturday it believed the remaining two contests in the five-match one-day series would take place as scheduled.
However the board said in a later statement it would hold a meeting to discuss the allegations as a matter of urgency.
"The ECB is seeking clarification and details from ICC, and the ECB board will meet later today to discuss the matter," a statement said.
According to The Sun, the latest allegations emerged after the paper was notified of calls between a match-fixer and a New Delhi bookmaker. The newspaper immediately notified the ICC's anti-corruption unit headed by former police chief Sir Ronnie Flanagan.
The investigation is another body-blow to Pakistan, who have been under the spotlight this summer amid allegations of spot-fixing against members of the touring party.
Salman Butt, Mohammad Aamer and Mohammad Asif have all been questioned by police over an alleged plot to bowl deliberate no-balls during last month's Test series while a fourth player - seamer Wahab Riaz - was also interviewed by the authorities on Tuesday. All deny any wrongdoing.
On Friday, Scotland Yard detectives announced that an initial file detailing evidence of alleged corruption had been forwarded to the Crown Prosecution Service, who will decide whether to proceed with the case.
Meanwhile, coach Waqar Younis has urged his Pakistan side to go on and win the current one-day series against England after their display at The Oval on Friday.
Their 23-run victory, built on Umar Gul's brilliant show of reverse swing bowling, left the series 2-1 in England's favour with a game at Lord's on Monday and the final match in Southampton on Wednesday to come.
"The series is still alive and it gives us the incentive that we can come back and win the series now," said Waqar.
"The momentum is with us. It is outstanding to be going to Lord's with this win behind us and we will be looking to make it 2-2. There is no reason why not.
"It has been a real tough tour on and off the field with a very young side. We have done pretty well. We won two Test matches and I am pretty pleased if you look at the bigger picture but there is still work to be done.
"Hopefully in the next two games we can produce some more good cricket. In the first two games we produced some pretty good cricket but we just could not finish.
"I am happy with the overall performance but we probably could have done better and we will discuss that. We could have put another 30 or 35 runs on the board.
"We are a really young side with young bowlers and we have always been very good when it comes to reverse swing."
Pakistan are still unable to play cricket at home due to security concerns, but Waqar is confident for the future.
"I hope it comes as soon a possible. We want to take cricket back into Pakistan, there are heaps of stadiums there and the people are waiting for cricket to come back," he said. "I don't know how long it will take but I want it to happen as soon as possible."
Pakistan wicket-keeper Kamram Akmal was heading for hospital for a scan on his injured hand on Saturday morning.
Akmal left the field on Friday in considerable pain but Waqar is hopeful he will be fit for Monday's game.
Meanwhile, England captain Andrew Strauss expects Paul Collingwood to have recovered from the virus that kept him out of the match at The Oval.
Strauss said: "Hopefully he will be fit for Monday. It looks like it is going to get better rather than worse. He is one of our most experienced players and having him coming in at number four is always a positive."
Strauss was one of Umar Gul's six victims on Friday but refused to talk up the skills of the Pakistani.
He added: "A lot of bowlers reverse swing the ball but I am not going to hype him up."