Two Russian swimmers barred from the Olympics after an investigation found state-run doping have been given the all-clear to compete in Rio, the FINA swimming federation told AFP on Thursday.

Vladimir Morozov and Nikita Lobintsev had been banned after being implicated in the Richard McLaren report on state-run doping in Russia. But they were named among 31 swimmers allowed to compete in Rio, FINA said.

Five Russian swimmers remain banned. But all of Russia's water-polo players, synchronised swimmers and divers have been allowed into the Rio contest.