Russian Foreign Minister Sergei Lavrov on Wednesday arrived in the Democratic People's Republic of Korea (DPRK) for a two-day visit, Russian news agency RIA reported.

Lavrov's two-day visit comes a month after DPRK's top leader Kim Jong Un made a trip to Russia, during which he invited Putin to Pyongyang and discussed military cooperation.

Read more: Putin, Kim Jong Un hold talks in Russian space center

Lavrov, who last visited the DPRK in 2018, will hold talks with his DPRK's counterpart, according to the Interfax news agency.

U.S. Special Representative for the DPRK Sung Kim on Tuesday called relations between the DPRK and Russia "worrying," after the White House said last week Pyongyang had recently supplied weapons to Russia.

A growing number of reports by the U.S. government and Western researchers have documented with satellite imagery what they say are the DPRK's weapons shipments to Russia for use in the Russia-Ukraine conflict.

Kremlin spokesman Dmitry Peskov said on Tuesday that the Western allegations were not based on evidence.

"They report about it all the time. They don't provide any evidence," Peskov said, according to TASS. Peskov said Russia would continue to build its relations with the DPRK.

(Cover: Russian Foreign Minister Sergei Lavrov. /CFP)