"Teams (specialists) continue to study all sources of isopropyl alcohol on board (ISS and Dragon-2) to determine exactly what happened," RIA Novosti reports his words.

Earlier, the head of the Cosmonaut Training Center, Hero of Russia Pavel Vlasov, said that Russia had sent NASA questions about the release of isopropyl alcohol into the atmosphere of the International Space Station (ISS) after the docking of the Dragon 2 spacecraft to it.