NEW YORK/WASHINGTON -- North Korea and the United States have completed this week's talks in New York, which both sides called "constructive."

Speaking to reporters separately, North Korean Vice Foreign Minister Kim Kye-gwan and Stephen Bosworth, the U.S. special representative for North Korea policy, gave no details on whether substantial progress was made in their two-day discussions.

"Talks were very constructive and business-like," Kim said, leaving the U.S. Mission to the United Nations in the afternoon.

"(I) will try to continue momentum down the road."

In a brief statement, Bosworth stressed that Washington is open for dialogue with Pyongyang as long as it is serious about denuclearization.

"We reiterated that the path is open to North Korea towards the resumption of talks on improved relations with the United States and greater regional stability if North Korea demonstrates through its actions that it supports the resumption of the six-party process as a committed and constructive partner," he said.

The Kim-Bosworth talks this week, their first in 19 months, were aimed at exploring ways to restart the multilateral nuclear negotiations that also involve South Korea, China, Japan and Russia. (Yonhap News)