The International Olympic Committee says a Ukrainian heptathlon silver medalist is under investigation for a positive drug test at the Beijing Olympics.

Lyudmila Blonska competes during long jump event at Beijing Olympics

The IOC said Wednesday it has opened a probe into Lyudmila Blonska, who finished second behind Ukrainian Natalia Dobrynska last Saturday.

The IOC's disciplinary commission and executive board are expected to rule on the case Thursday.  If found guilty, Blonska would be stripped of her medal and could be subjected to a lifetime ban.

Blonska served a separate doping suspension earlier this decade.

Some information for this report was provided by AFP, AP and Reuters.