A South Korean special envoy delivered a letter from President Moon Jae-in to North Korean leader Kim Jong Un on Wednesday during a rare visit to Pyongyang — part of a bid to help break an impasse in nuclear negotiations with the U.S. and plan for Moon's third summit with Kim later this month.

A five-member delegation led by national security chief Chung Eui-yong arrived in the North Korean capital Wednesday morning and met with Kim later in the day, the Yonhap news agency reported, quoting a spokesman with South Korea's presidential Blue House.

The delegation was due to depart Pyongyang late Wednesday evening after a dinner event, the Blue House added.