Delegates of the Democratic People's Republic of Korea (DPRK) and the United States have arrived at the venue for their fourth one-on-one meeting in Beijing Friday, the fourth day of the Koran Peninsula nuclear talks.

One-on-one meetings between delegations would prevail on the fourth day of the six-party talks in search of ways to resolve the nuclear issue, diplomatic sources said here Friday.

After their three-hour third meeting Thursday morning, which was longer than the previous two meetings, the two delegations agreed "to continue consultations," said Qin Gang, spokesman for the Chinese delegation, Thursday afternoon.

Qin also disclosed that the heads of the Japanese and DPRK delegations might meet at an appropriate time.

The ongoing fourth round of the six-party talks was moving towards the right direction at a "good" atmosphere, said Chinese Vice Foreign Minister Dai Bingguo at a meeting with heads of the six delegations.

"All the delegates have had frank, in-depth and pragmatic discussions on realizing a nuclear-weapon-free Korean Peninsula and setting an overall goal for the six-party talks," Dai said at the meeting before a luncheon.

An official with the delegation of the Republic of Korea (ROK) said Thursday afternoon that all delegations agreed at the luncheon to strive for substantive results, including a joint document, in the talks, involves China, the DPRK, the United States, the ROK, Russia and Japan.

While people were expecting the outcome of the negotiation, Russian delegation head Alexander Alexeyev told a press briefing Thursday he would leave Beijing for Moscow on Saturday.

Alexeyev, also Russian deputy foreign minister, said his deputywould remain in Beijing and he would come back "as soon as it's necessary to come back."

The six-party talks restarted Tuesday in Beijing after a 13-month-long impasse, and no deadline has been set for the talks as all sides had expressed their willingness for substantive results before the resumption of the negotiation.