The Qatar World Cup bid team allegedly broke Fifa rules by running a secret "black-ops" campaign to sabotage rivals competing for the 2022 tournament.

The team used former CIA agents and a PR agency to spread fake propaganda about the US and Australia, its two main competitors, according to documents leaked to The Sunday Times.

The campaign allegedly involved recruiting prominent figures to criticise the bids in their own countries, thus giving the impression they lacked support at home.

The newspaper says it was passed emails by a whistleblower who worked with the Qatar bid team.

Fifa rules say that bidders must "refrain from making any written or oral statements of any kind, whether adverse or otherwise, about the bids or candidatures of any other member association which has expressed an interest in hosting and staging the competitions".

Qatar's Supreme Committee for Delivery and Legacy said it "rejected" all the claims made by the paper.

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According to the newspaper, the alleged smear campaign included paying a professor $9,000 (£6,900) to write a damning report on the economic cost of a World Cup in the US, recruiting journalists and bloggers to promote negative stories in American, Australian and international media, and organising grassroots protests at rugby matches in Australia.

The leaked documents also revealed that a group of American PE teachers had been recruited to ask congressmen to oppose a World Cup on the grounds the money would be better spent on high school sports, the paper claimed.

Lord Triesman, former chairman of the Football Association and England bid chairman, urged Fifa to "look at the evidence thoroughly", and said Qatar should not be allowed to "hold on to the World Cup" if they were shown to have broken Fifa rules.

He told the paper: "I think it would not be wrong for Fifa to reconsider England in those circumstances... We have the capabilities."

Qatar 2022 World Cup stadiums Show all 12 1 /12 Qatar 2022 World Cup stadiums Qatar 2022 World Cup stadiums The Doha Port stadium is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The Al-Wakrah stadium complex is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The iconic Lusail Stadium. With a capacity in excess of 86,000 and surrounded by water, the stadium would host the World Cup Opening Match and Final GETTY IMAGES Qatar 2022 World Cup stadiums The iconic Lusail Stadium, view from outside GETTY IMAGES Qatar 2022 World Cup stadiums The Al-Rayyan stadium is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The Al-Khor stadium is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The Al-Shamal stadium is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The Qatar University stadium is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The Doha Port stadium is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The Al-Gharafa stadium is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The Umm Slal stadium is pictured in this artists impression GETTY IMAGES Qatar 2022 World Cup stadiums The Sports City stadium is pictured in this artists impression GETTY IMAGES

The Qatar bid team has previously been accused of corruption, but was cleared following a two-year inquiry by the Fifa ethics committee.

In a statement, Qatar's Supreme Committee for Delivery and Legacy said: "The Supreme Committee rejects each and every allegation put forward by the Sunday Times.

"We have been thoroughly investigated and have been forthcoming with all information related to our bid, including the official investigation led by US attorney Michael Garcia.

"We have strictly adhered to all Fifa's rules and regulations for the 2018/2022 World Cup bidding process."