WASHINGTON, May 25 (UPI) -- A bipartisan congressional report says China has stolen secret information ``on every currently deployed U.S. intercontinental missile and submarine-launched ballistic missile.'' The report also says China stole classified nuclear weapons secrets from an unnamed U.S. national weapons laboratory ``in the mid-1990s,'' but ``the Clinton administration has determined that further information may not be made public'' to protect sources and an ongoing investigation. Though unnamed, the nuclear lab is believed to be Los Alamos in New Mexico. One Chinese-American computer scientist, Wen Ho Lee, has been the target of an FBI investigation since 1996. He was fired from Los Alamos in March for relatively minor security violations. However, Lee has not been charged so far with a crime after a lengthy investigation, and through his Los Angeles lawyer he has strongly denied compromising U.S. security or spying for China. The report alleges China also stole warhead secrets on the following systems: the W-56 Minuteman II ICBM; the W-62-Minuteman III ICBM; the W- 70 Lance short-range ballistic missile; the submarine-launched W-76 Trident C-4; the W-78 Minuteman III Mark 12A ICBM; the W-87 Peacekeeper ICBM, and the sub-launched W-88 Trident D-5. ``The W-88 is the most sophisticated strategic nuclear warhead in the U.S. arsenal,'' the report says. The W-88 was developed at Los Alamos. The report says China -- called the PRC, or People's Republic of China, in today's document -- has already begun work on smaller nuclear warheads, based in part on secret information on the W-70 Lance and W-88 Trident D systems. The ``next generation'' of Chinese systems is moving toward ``road-mobile'' ICBMs, the report contends. Other sections of the massive report say a volunteer, termed a ``walk-in,'' came into a CIA facility outside the United States in 1995 and gave officials a secret 1988 Chinese document that indicated China possessed U.S. secrets on warhead miniaturization. The CIA concluded that the ``walk-in'' was a double agent, and that the secret Chinese document had been passed to U.S. officials on the orders of Chinese intelligence. Nevertheless, the report says, the CIA concluded that the document was genuine. The document also initiated the ongoing massive U.S. investigation into Chinese spying. Because of its subject matter, miniturization, the document caused investigators to focus on Lee. The document also ``definitely confirmed'' earlier U.S. suspicions of Chinese nuclear miniaturization based on Chinese nuclear tests from 1992-1996, the report says. ``The PRC's theft of classified U.S. weapons design information saved the PRC years of effort and resources in developing its new generation of modern thermonuclear warheads,'' the report concludes.  