Washington ? A new, partially declassified intelligence report provides no new evidence that Saddam Hussein had stockpiled weapons of mass destruction on the eve of the U.S.-led invasion, as President Bush alleged in making the case for war, U.S. intelligence officials said Thursday.

The report, made public in the midst of a partisan debate in Congress, said about 500 munitions containing degraded chemical weapons, including mustard gas and sarin nerve agent, had been found in Iraq since the March 2003 invasion.

But the intelligence officials said the munitions dated from before the 1991 Persian Gulf War and were for the most part badly deteriorated. “They are not in a condition where they could be used as designed,” one intelligence official said.

The report was written by the National Ground Intelligence Center, an Army unit.