North Korea says it will continue to co-operate with the US on ending its nuclear programme and agrees that stalled talks need to resume.

朝鲜政府称将就核计划问题与美国继续合作并同意重新开始六方会谈。

The Yongbyon nuclear facility is the North's key nuclear site

The country's foreign ministry¹ said Pyongyang would work with the US to "narrow remaining differences".

The announcement comes following a visit to Pyongyang by US President Barack Obama's special envoy特使 Stephen Bosworth.

This was the country's first official reaction after three days of talks.

'Mutual³ understandings'

State media quoted a foreign ministry spokesman as saying: "[North Korea] and the United States agreed to continue cooperation in order to narrow remaining differences.

"The two sides were able to deepen mutual understanding, narrow differences in views and find considerable common ground共同点.

"A series of mutual understandings were also reached on the need to resume [six party talks]".

Mr Bosworth had earlier described the talks as "useful" but said he did not know when talks would be resumed.

These were the first official discussions between the US and North Korea since Mr Obama took office.

North Korea walked away from离开 six-party nuclear talks earlier this year, but then said it could return.

These discussions - involving the US, China, Russia, Japan and the two Koreas - are aimed at getting rid of the North's nuclear capabilities⁴ in return for aid and security guarantees.

North Korea had said it would never again get involved in the talks. But China managed to persuade officials in Pyongyang to consider returning.

The BBC's Michael Bristow says that Mr Bosworth's trip was aimed at showing North Korea the "different future" that awaited it if it rejoined talks and eventually gave up its nuclear ambitions野心，抱负.

Mr Bosworth met several top officials, although not the leader, Kim Jong-il.

Mr Bosworth is now due to fly to Tokyo, Beijing and Moscow to brief简报，摘要 officials from the other nations involved in the six-party talks before heading home.