BEIJING, Feb. 13 (Xinhua) -- Chief U.S. negotiator to the six-party talks Christopher Hill said here Tuesday that the United States has approved the revised draft agreement.

"We've approved it," Hill said on early morning, adding that he had talked to the U.S. Secretary of State Condoleezza Rice "many times" last night, and Rice is "very much followed the details of the process".

Host China called a meeting of top negotiators from the Democratic People's Republic of Korea (DPRK), the U.S., Japan and Russia at 10:30 a.m.

Asked if he hopes the DPRK will come back with a good answer on the draft presented by host China, Hill said, ''I hope so.''

An agreement on the first step toward the denuclearization of the DPRK may come out on Tuesday as negotiations dragged into the sixth day.

The draft, circulated last Thursday, reportedly proposes halting within two months the work at nuclear sites in the DPRK, including the Yongbyon reactor, and supplying Pyongyang with alternative energy sources.

The current phase of six-nation talks began on a promising note after the DPRK and the United States showed a compromise in a landmark meeting in Berlin in January.