The envoys of the six parties involved in the Korean Peninsula nuclear issue worked overnight in a bid to clinch a possible deal, but no agreements announced yet.

Instead of returning to their hotels, all chief negotiators stayed in the State Diaoyutai Guesthouse from Monday 10 am to Tuesday 2:30 am, according to Qin Gang, spokesman of the Chinese delegation.

Qin told a news briefing on early Tuesday morning that the consultation would continue on Tuesday.

The bilateral and multilateral consultations, lasting about 16 hours, are "extraordinary intensive", Qin said.

The six parties have made their "utmost efforts" and some positive results have been achieved, Qin said, adding that the results needed to be further confirmed.

He declined to reveal more details, suggesting that more information about the consultations would be available later on Tuesday morning.

A new round of the consultation would start at 9:30 am to 10:30 am on Tuesday morning, Qin added.

Source: Xinhua