Russian Prosecutor General Igor Krasnov has visited North Korea for the first time, his office said Monday, marking another sign of burgeoning ties between the two countries.Krasnov was greeted by a representative of the Supreme Prosecutor's Office upon arrival at the airport in Pyongyang, according to a statement posted on the office's website.Although the Russian and North Korean prosecutors' offices have maintained relations since signing a cooperation agreement in December 2010, this is the first visit by a chief Russian prosecutor to North Korea.In Pyongyang, Krasnov will meet with his North Korean counterpart and discuss issues of bilateral cooperation with other officials, it said.The two countries have expanded cooperation in various sectors following Russian President Vladimir Putin's trip to Pyongyang last month for summit talks with North Korean leader Kim Jong-un.Source: Yonhap News Agency