Japanese opposition lawmaker Suzuki Muneo has defied a government advisory against travel to Russia and has held talks with Deputy Foreign Minister Andrey Rudenko.

Russia's Foreign Ministry says Suzuki, an Upper House lawmaker with Nippon Ishin Japan Innovation Party, met Rudenko on Monday.

It says Rudenko expressed regret over Japan's sanctions on Moscow, which he said were "just to please the US and the anti-Russian course of the collective West," which has been imposed by the US.

Rudenko reportedly told Suzuki that the sanctions are not in Japan's interests.

This is the first known visit by a Japanese Diet member to Russia since it launched its invasion of Ukraine in February last year.

In Tokyo, Chief Cabinet Secretary Matsuno Hirokazu told reporters on Tuesday that the government did not receive prior notice from Suzuki about his travel plans.

Suzuki's office claims it sent a note to the Upper House about the visit. However, Japan Innovation Party says it was not consulted, and will grill Suzuki on his return. The party said it would also consider penalties.

Matsuno said the government urges all Japanese citizens to avoid travel to Russia, a remark suggesting the advisory applies equally to Diet members.

Suzuki is known for having a close interest in Japan-Russia ties. He has suggested that Ukraine is partly responsible for inviting the Russian invasion, a stance strongly refuted by the Japanese government.