LONDON: Any athletes who thought they got away with doping at the Beijing Olympics shouldn't rest easy. The drug police are coming back.

The International Olympic Committee said on Wednesday it will retest samples from the games to search for a new blood-boosting drug at the center of the latest Tour de France scandals.

The move reflects the IOC's aggressive attempts to nab drug cheats not just during an Olympics, but weeks, months and even years later once new tests become available. Results and medals could be at stake.