Olympic shot put champion Val Adams will likely be promoted to a silver medal, after re-testing of doping samples from the 2005 Helsinki world championships.
It seems Belarusian Nazdeya Ostapchuk, the woman who tested positive for steroids after beating Adams at London last year, was also cheating when she won the world title eight years ago.
Adams, then 20, finished third in her first senior championship with a throw of 19.87m and should now be elevated to the silver, behind Russian Olga Ryabinkina (19.64m).
"The International Association of Athletics Federations has re-tested a selection of doping samples collected at the 2005 IAAF World Championships, Helsinki Finland, from a wide range of disciplines and the results have revealed a further six adverse findings," said the sport's governing body today.
"The six adverse findings involving Andrej Mikhnevich (Belarus), Ivan Tsikhan (Belarus), Vadim Devyatovskiy (Belarus), Tatyana Kotova (Russia), Nazdeya Ostapchuk (Belarus) and Olga Kuzenkova have resulted in the initiation of disciplinary procedures, which are currently ongoing in accordance with IAAF Rules."
IAAF president Lamine Diack warned his organisation would continue to carry out retrospective testing to weed out offenders with the latest laboratory techniques.
"The IAAF's message to cheaters is increasingly clear that, with constant advancements being made in doping detection, there is no place to hide," said Diack.
"This re-testing is just the latest example of the IAAF's firm resolve to expose cheating in our sport."
Adams is preparing to compete at the Sydney Track Classic this evening, but issued a breif statement in response to the IAAF announcement.
"It is fantastic that the IAAF are working hard to uncover drug cheats and are focused on maintaining the integrity of the sport," she said. "I find it very motivating that the world governing body is committed to making the sport of athletics as clean as possible."