North Korean leader Kim Jong Un’s right-hand man Jo Yong Won arrived in Moscow for talks with former Russian president Dmitry Medvedev on Saturday, state media reported, days before the U.S., Chinese and Russian leaders are set to hold their first-ever trilateral meeting in China.

The official is leading a party and government delegation at the invitation of Medvedev, current chairman of Russia’s ruling United Russia party, the Korean Central News Agency (KCNA) reported Sunday.