Fu avenged his loss to Joe Perry last year. TELFORD (England): Hong Kong snooker star Marco Fu moved into the UK Championship semi-finals on Wednesday but the announcement that the world governing body of snooker were investigating claims of suspicious betting cast a pall over the tournament. Fu edged out Englishman Joe Perry to avenge going out to him in the second round of the same tournament last year. The duo fought out a seesaw battle with Fu pulling away to an 8-4 lead but Perry then won the next three only for the Hong Kong player to hold his nerve and take the one frame he needed for victory. Wednesday's other quarter-final saw Englishman Ali Carter win a thriller with Wales' former world champion Mark Williams 9-8. Earlier, the WPBSA (World Professional Billiards and Snooker Association) had announced they were launching an investigation into the betting on the first round match between Stephen Maguire and Jamie Burnett. Maguire prevailed 9...