The Russian Olympic Committee have banned four athletes, including a former European silver medalist, for doping.

Irina Maracheva, who won the silver medal in the 800 metres at the 2012 European games, has received a two-year ban.

Race-walker Anna Lukyanovam a former silver medalist at the World Junior Championships, has been handed same punishment as Marachava.

Runners Maria Nikolaeva and Elena Nikulina were given the more severe punishment of a four-year ban.

The ROC have not confirmed the offences committed by the four athletes.