His possible trip to New York raised the prospects of bilateral talks with his US counterpart, Mike Pompeo, as Washington is seeking to restart working-level nuclear negotiations with Pyongyang.
"The North has informed the UN that Foreign Minister Ri Yong-ho will deliver a keynote address during a high-level session of the UN General Assembly slated to open from Sept. 17," the source said on condition of anonymity.
"At this point in time, Foreign Minister Ri appears likely to attend the Assembly session," the source added.
North Korea's top diplomat has attended the UN General Assembly almost every year. As Pompeo is expected to attend the gathering, speculation has arisen that the two could meet bilaterally.
Pompeo and Ri were expected to meet on the sidelines of a regional security forum in Thailand earlier this month. But Ri abruptly canceled his plan to attend the forum for an unspecified reason.
Hopes have been growing that the US and the North may resume their nuclear talks in the near future, as the South Korea-US military exercise, which Pyongyang berated as an invasion rehearsal, concluded this week.
But Pyongyang's recent tough rhetoric against Seoul and Washington has also cast doubts over the prospects for the resumption of dialogue with the regime. (Yonhap)