Ukrainian heptathlete Lyudmila Blonska has been stripped of her Beijing Olympics silver medal after she tested positive for an anabolic steroid, an International Olympic Committee (IOC) official said on Friday, according to Reuters.

"She has been stripped of her medal," the IOC official told Reuters after an IOC Executive Board meeting on Friday.

Blonska now faces the prospect of a lifetime ban after what has officially become her second doping offence.

She tested positive after her competition on Aug 17.

All top-five finishers as well as several other random athletes undergo drugs tests during the Games.

Blonska, who tested positive to methyltestosterone, had returned to competition in 2005 after serving a two-year doping ban.

It is now up to the International Association of Athletics Federations to impose any further sanctions.