Russian President Vladimir Putin has said that he is not aware of any criminal business interests in Ukraine attributed to the son of the U.S. presidential candidate Joe Biden by the press, but this is none of Russia's business anyway.

"This is none of our business. This concerns the U.S. and Ukraine," Putin said in an interview with the Moscow. Kremlin. Putin on the Rossiya 1 (VGTRK) television in commenting on the relevant reports.

Putin's statement was published on the television show's website on Sunday.

Putin noted that he knows at least one existing company in Ukraine, which operated in the oil and gas sector and "was actually led by Hunter Biden, who apparently earned a good money."

"But I see no criminality there. At least we know nothing about it," Putin said.

In the TV show, a presenter asked Putin to comment on U.S. President Donald Trump's statement that Russia is paying Biden money.

"No comment," he said.

In commenting on reports about the existence of some links between former Moscow Mayor Yury Luzhkov's widow Yelena Baturina and Biden, Putin said: "Perhaps, she had numerous business contacts, business connections with foreign partners. Are there any Americans among them? I just know nothing about it."