Zurich, Switzerland - Fifa is under growing pressure over its controversial decision to award the 2022 World Cup to Qatar. One of its main sponsors, Sony, has called on the governing body to carry out an "appropriate investigation" into claims of wrongdoing during the bidding process. Meanwhile, the Sunday Times news paper in London has published new allegations based on a leak of millions of secret documents. Qatar were awarded the right to stage the 2022 World Cup in December 2010. The decision has come under increasing scrutiny with Fifa vice-president Jim Boyce saying he would support a re-vote to find a new host if corruption allegations can be proven. Fifa president Sepp Blatter called for time to investigate the issues when he posted a message on his Twitter account which said:  "Never ignoring media reports on ethics allegations in football. But let the Ethics Committee work!" Last week the newspaper alleged that Qatar's former Fifa vice-president Mohamed bin Hammam paid £3m to football officials around the world to help win support for Qatar in the run up to the World Cup vote in December 2010. Now Bin Hammam is facing claims that he used his top level contacts in the Qatari royal family and government to arrange deals and favours to secure the tournament for his country.(FA)