London: Major sponsors Adidas and Sony yesterday demanded that FIFA carry out a thorough investigation of corruption allegations over Qatar's 2022 World Cup-bid stepping up pressure on football's governing body to act.

The corporate titans urged football's rulers to probe claims that former Qatari football boss Mohamed bin Hammam paid millions of dollars in bribes to secure support for a deeply controversial victory in a 2010 FIFA vote.

The two companies, between them, account for hundreds of millions of dollars of sponsorship for FIFA.