Chief US negotiator Christopher Hill said in Beijing Sunday that differences among the delegations to the six-party talks over the wording of the draft common document remained.

"The issue is how we express the elements in the text," said Hill, also US assistant secretary of state, adding that the delegation of the US prefers a less ambiguous text.

Before leaving the hotel, Hill said that they are all supportive of the document though some delegations prefer to leave something more ambiguous.

"We are going to stay another day," said Hill.

The six delegations from China, North Korea, the US, South Korea, Russia and Japan, were supposed to have a plenary session Sunday morning, which, however, was replaced by a meeting of delegations heads due to unknown reason.

The delegation heads' meeting was going on by press time.

Last night, said Hill, he had talks with the Chinese and Russian delegations, as well as a "good" dinner.

(Xinhua News Agency September 18, 2005)