Russia will not resort to any bargaining for Ukrainian pilot Nadia Savchenko, whom Moscow has accused of complicity in the killing of Russian journalists in Ukraine, says Russian State Duma Chairman Sergei Naryshkin.

"I am afraid this allegation could have been made by the Ukrainian delegation: unfortunately, everything can be sold and bought there now, and this is the only place where such a cynical exchange could have been proposed," Naryshkin told journalists on the sidelines of a Parliamentary Assembly of the Council of Europe (PACE) session in Strasbourg on Tuesday.

Naryshkin answered a journalist asking him to comment on media reports that Russia could agree to free Savchenko if the foreign sanctions imposed on it are relaxed.

"This problem can only be settled in a legal way, and there can be no bargaining," Naryshkin said.