A U.S. newspaper reports that Washington is asking China to pressure North Korea on its alleged nuclear weapons program.

A story in Wednesday's New York Times says two members of President Bush's National Security Council recently met with Chinese President Hu Jintao in Beijing.

The report says the officials discussed new evidence that Pyongyang may have sold to Libya a form of uranium used in nuclear weapons.

The Times quotes Asian officials who say China has promised to send a delegation to North Korea. But the officials say China also advised President Bush against making the kind of public statements about the North Korean situation as he did about Iraq's alleged threat before the U.S.-led invasion in 2003.