The silver and bronze medalists from Belarus in the men's hammer throw at the Beijing Olympics were caught doping and could be stripped of their medals.
Vadim Devyatovskiy and Ivan Tsikhan are still being investigated for doping offenses at the games by the International Olympic Committee.
"Listen, they were tested and it was positive. They were tested for the 'A' and 'B' sample," Lamine Diack, president of track and field's governing body, told The Associated Press on Friday.
The substance was testosterone, said another IAAF official who spoke on condition of anonymity because the IOC investigation was still ongoing.
"For the IAAF it is clear. It will be a suspension," Diack said at the end of the Golden League competition in Brussels. "Now it goes to the level of the IOC but for us, it is clear."