US and North Korean officials held informal discussions here on efforts to end the stalemate over Pyongyang's nuclear weapons activities.
Christopher Hill, the chief US negotiator in the six-party talks, met with North Korea's Deputy Foreign Minister Kim Kye-gwan Tuesday.
The discussions were "positive" but no dates were set for the resumption of six-nation talks that have been taking place for years to persuade Pyongyang to give up nuclear weapons, US State Department deputy spokesperson Tom Casey said in Washington.
"In terms of the meeting today, it was a good exchange of views that certainly was conducted in a positive atmosphere," he said.
China, Japan, Russia and South Korea are the other four nations that make up the negotiations.
The last meeting of the six-party talks was in Beijing in December. They were the first round of discussions since North Korea provoked international condemnation by testing a nuclear bomb on Oct 9.