Mykhaylo Tkach, an RFE/RL Ukrainian Service correspondent with the Skhemy (Schemes) project, said on Facebook that masked men attacked the journalists late on November 7 and prevented them from filming the arrival of the politician and his plane.

"They elbowed us, pushed us, tripped us, and kicked the camera out of our cameraman's hands twice," Tkach wrote. "They blocked our vehicle with a dashboard camera in it so that we were unable to film the landing of Viktor Medvedchuk's plane arriving from Russia and him passing through the terminal."

[The men appeared to be the same bodyguards who work for Medvedchuk at the Kyiv (Zhuliany)  Airport whenever he boards flights for Moscow or returns from visits to Russia.]

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The men appeared to be the same bodyguards who work for Medvedchuk at the Kyiv Airport whenever he boards flights for Moscow or returns from visits to Russia.

Read alsoPutin's friend, Ukrainian oligarch Medvedchuk was in contact with Trump campaign – ReutersTkach said the masked men appeared to be the same bodyguards who work for Medvedchuk at the Kyiv Airport whenever he boards flights for Moscow or returns from visits to Russia.

The chief editor of the Skhemy project, RFE/RL journalist Natalia Sedletska, said Medvedchuk's bodyguards had been trying to disrupt her team's work for several weeks.

Read alsoUkrainian parliament refuses to sack Interior Minister AvakovMedvedchuk is a Ukrainian politician who has close personal ties with Russian President Vladimir Putin.

He is a regular participant in negotiations aimed at resolving the conflict in eastern Ukraine between Ukrainian government forces and Russia-backed separatists.

There were no immediate official statements from Medvedchuk or from Ukrainian authorities about the reported attack.