No WMD in Iraq, CIA warned Bush

But the operative, Tyler Drumheller, said top White House officials simply brushed off the warning, saying they were "no longer interested" in intelligence and that the policy toward Iraq had been already set.

The disclosure, made in an interview with CBS's "60 Minutes" programme due to be broadcast late Sunday, adds to earlier accusations that the Bush administration used intelligence selectively as it built its case for the March 2003 invasion of Iraq and the toppling of Saddam's regime.

The administration claimed in the run-up to the war that Baghdad had extensive stockpiles of chemical and biological weapons and was working clandestinely to build a nuclear arsenal, therefore, presenting a threat to the world.

An extensive CIA-led probe undertaken after the US military took control of Iraq failed to turn up any such weapons. But Bush and other members of his administration have blamed the fiasco on a massive intelligence failure and vehemently denied manipulating information they had been provided.

However, Drumheller, who was a top CIA liaison officer in Europe before the war, insisted Bush had been explicitly warned well before an invasion order was given that the United States may not find the suspected weapons of mass destruction in Iraq. The information about the absence of the suspected weapons in Iraq, according to excerpts of Drumheller's remarks, was clandestinely provided to the United States by former Iraqi foreign minister Naji Sabri, who doubled as a covert intelligence agent for Western services.