Tai, who won the women's nanquan and nandao combined wushu, tested positive for the banned substance sibutramine after her event on September 20.
"The competitor has been disqualified from the competition as well as these Games and as such her accreditation cancelled and her medal withdrawn," read the statement."These findings will now be forwarded to the competitor's national authorities, the international federations of the sport concerned (Asian and International Wushu Federations) and the World Anti-Doping Agency for further action on their part as per sanctions concerning eligibility.
"The 22-year-old had claimed Malaysia's first gold medal of the Games with her victory but that medal will now pass on to Juwita Niza Wasniof Indonesia.
China's Wei Hong moves into second with another Indonesian, Ivana Ardelia Irmanto, taking bronze.Tai becomes the second athlete banned from the Games for taking sibutramine.
Yi Sophany of Cambodia, a female soft tennis player, tested positive for the substance on September 16, three days beforethe Incheon Games officially opened.
Tajikistani footballer Khurshed Beknazarov was also expelled, having tested positive for methyl hexaneamine.The OCA medical committee chairman M Jegathesan said Saturday that1,900 athletes would be tested during the course of the Games.