South Korea’s sports minister on Tuesday took a swipe at the London Olympics over alleged cases of biased refereeing, vowing to step up Seoul’s influence with international sports organisations. Choe Kwang-Shik made the remarks in a speech at a disbandment ceremony for the South Korean delegation, whose last batch of 55 athletes returned home on Tuesday. South Korea finished fifth in the medal standings at the London Olympics with 13 golds, equalling its record for the most at a Games. “I express heartfelt gratitude to the athletes who did their best and overcame all difficulties despite unfair refereeing,” Choe said at the ceremony held at Incheon airport and broadcast live on TV.