Three Olympic champions from China are among 11 weightlifters who face being stripped of their medals after failing retests of their Beijing 2008 doping samples.
The 11 medallists tested positive for a range of banned substances, says the International Weightlifting Federation.
Among those to fail are gold medallists Cao Lei, Liu Chunhong and Chen Xiexia.
The other eight medallists to test positive are from Russia, Belarus, Kazakhstan, Azerbaijan and Ukraine.
They are all provisionally suspended until the cases are resolved.