US authorities have expanded their investigations into corruption within world football's governing body FIFA and expect to file additional criminal charges, according to US Attorney General Loretta Lynch.Seven high ranking FIFA officials were arrested ahead of the football governing body's meeting in May this year.Swiss authorities had launched a separate criminal investigation into the bidding process for the 2018 and 2022 World Cups that are set to be held in Russia and Qatar.FIFA President Sepp Blatter won a fifth term in the office but announced just four days later that he was standing down.Lynch did not comment on Monday on whether Blatter is targeted.In a separate investigation of money laundering in World Cup bidding, Swiss federal agencies have seized properties in the Swiss Alps.The Swiss investigation, added Lauber, had not yet reached the half way mark and his office had continued to build up its mountain of seized data.His office has so far gathered around 11 terabytes of electronic data.