The 2012 Olympic men's high jump champion Ivan Ukhov is among 12 Russian athletes to be banned for doping by the Court of Arbitration for Sport (CAS).
CAS on Friday announced that Ukhov will be stripped of the gold medal he won in London following an investigation into allegations of anti-doping violations.
Ukhov has been hit with a four-year ban, starting on February 1, and his results achieved between July 16, 2012 and December 31, 2015 have been disqualified.
Svetlana Shkolina, winner of a women's high jump bronze medal in the London Games seven years ago and world champion in Moscow in 2013, has been given the same punishment by CAS.
Tatyana Lysenko, crowned world champion for the second time in her homeland six years ago, and fellow hammer-thrower Gulfiya Agafonova were banned for eight years – backdated to July 2, 2016 and January 6, 2017 respectively.
Tatyana Firova, Lyukman Adams, Anna Bulgakova, Ivan Yushkov, Yekaterina Galitskaia and Yuliya Kondakova were given four-year suspensions.
Mariya Bespalova, suspended since 2015, had her results from July 17, 2012 to October 26, 2015 chalked off, while Vera Ganeeva was banned for two years from July 2, 2018.
CAS carried out the disciplinary procedures as the Russian Athletics Federation is suspended from doing so and took evidence from the McLaren report, which found that Russia operated a state-sponsored doping programme.
