The two athletes are not related and there was "no evidence" to prove the systematic use of drugs by Uzbek athletes, though the OCA has asked Uzbekistan to look into the incidents, according to Jegathesan.

As of Nov. 23, the organizing committee had conducted a total of 1,262 tests and 1,090 tests have returned the results, according to the OCA medical chief.

In last Asian Games in Doha, four weightlifters, including two Uzbekistan athletes, were disqualified for positive doping tests.

China's new mark of on the Asiad medal tally, however, has been quite foreseeable.

With Li Caixia's gold and Li Ning's silver in the women's pole vault, China surpassed the previous record of 342 medals that the hosts registered in Beijing 20 years ago.

Also the home delegation is on course to refresh the gold medals mark with just three days of competition left. China's best ever haul of gold stands at 183 in the Beijing Asian Games in 1990.

The 18-year-old rookie He Min stunned Olympic winner Qin Kai to lift the men's 1 meter springboard title, after Olympic champion Wu Minxia met no challenge to claim the women's 1m springboard crown.

China's women's hockey team achieved a hat-trick of golds in the Asiad after ousting South Korea 5-4 in a penalty shoot-out, and Xu Linyin/Wu Penggen and Gao Peng/Li Jian finished 1-2 in men's beach volleyball.

Elsewhere, Asian record holder Ehsan Hadidi gave Iran its 16th gold medal of the games with victory in the men's discus, and South Korea's Kim Deok-hyeon edged China's Su Xiongfeng in the men's long jump.

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