London 2012 Olympic high jump gold medalist Ivan Ukhov is among the 12 Russian athletes banned for doping by the Court of Arbitration for Sport (CAS).
CAS has issued decisions in 12 first instance disciplinary procedures in which it replaced the Russian Athletics Federation (RUSAF), which is currently suspended and unable to manage any disciplinary procedures, in accordance with the IAAF regulations, said the sports court.
Ukhov and Svetlana Shkolina, who won high jump bronze in London and gold at the 2013 world championships in Moscow, were banned for four years.
With Ukhov disqualified, the International Olympic Committee is likely to upgrade silver medalist Erik Kynard to gold in the 2012 Olympic men's event.
Former double champion and world record holder hammer thrower Tatyana Lysenko, who had previously been stripped of her 2012 Olympic gold and fellow hammer thrower Gulfiya Agafonova were given an eight-year ban for a second offense.
In all cases, the athletes have been found guilty of ADRVs under the IAAF Rules and individual sanctions have been imposed by the CAS on each of the 12 athletes concerned.
The 12 athletes were given 21 days to appeal to the CAS Appeals Arbitration Division against the decision.