The United States on Friday denied North Korea's claim that the communist country had provided a full declaration of its nuclear programs in November.
White House spokesman Gordon Johndroe said that Washington has not yet received a complete and correct declaration.
He also urged North Korea to deliver one soon so that "we can all get the benefits offered in the six-party process."
The U.S. State Department also said the North has not provided any declaration, adding that Pyongyang is supposed to deliver it to China, the chair country of the six-party talks on ending the North's nuclear programs.
Christopher Hill, the top U.S. nuclear envoy to the six-party talks, said there was discussion with Pyongyang about the contents of the declaration but that he does not regard it as the final disclosure.
He also said that during his discussions with Pyongyang, he had not gotten the feeling that North Korea was prepared to make a full declaration.
He added that he sought to meet with his North Korean counterpart Kim Kye-gwan in Beijing, but that he thinks a meeting will be unlikely to take place.