Six more athletes, including three Russian medallists, have had their results from the 2008 Beijing Games annulled following re-testing of stored samples, the International Olympics Council (IOC) has announced.
The IOC has been conducting re-analysis of various samples from the 2008 and 2012 Games.
Among the disqualified athletes are three Russian competitors, including Tatyana Firova - a silver medalist in the women's 4x400 metre race.
The 4x400m team had already been stripped of their medals following re-analysis of Anastasiya Kapachinskaya's Beijing samples earlier this month.
Weightlifters Marina Shainova and Nadezda Evstyukhina have had their respective silver and bronze medals in the 58 kilogram and 75kg categories rescinded.
Armenia's Tigran Martirosyan has been stripped of his bronze medal in the men's 69kg weightlifting, while Moldova's Alexandru Dudoglo - who was ninth in the same event - has had his result disqualified.
Intigam Zairov of Azerbaijan has also been sanctioned and his ninth-place finish in the men's 85kg weightlifting has been voided.
Earlier this month, Russia also lost their women's 4x100m title from Beijing after Yulia Chermoshanskaya was retrospectively punished, while shot put silver medalist Evgeniia Kolodko was disqualified.