The Russian Olympic Committee says it has banned four of the country’s athletes for doping, including a former European silver medallist.

Irina Maracheva, the silver medal winner in the 800 metres at the 2012 European championships, received a two-year ban, as did the race-walker Anna Lukyanova, a former silver medallist at the world junior championships.

There were also four-year bans for the middle-distance runners Maria Nikolaeva and Elena Nikulina.

The sanctions were the first handed down by the ROC, which has gained some authority over the Russian track and field federation since it was banned from global competition in November over allegations of systematic doping.

The ROC did not specify which violations the four athletes had committed, when the bans were dated from, or which results would be cancelled as a result.