Iraq said its anti-aircraft forces shot down a US spy plane on Monday over the southern port city of Basra, the official Iraqi News Agency (INA) reported.
In Washington, a Pentagon duty officer said he had heard "nothing at all" about such a report, said AFP.
Iraq repeatedly alleges it has either hit or shot down British and US planes, but each claim has been totally denied by Washington or London.
"Iraqi anti-aircraft fire in the region of Basra on Monday brought down an American spy plane flying out of Kuwait," a military spokesman told INA.
The report did not say what type of aircraft had been hit, but added that it carried "high-tech intelligence-gathering equipment that the United States used in its aggression against Yugoslavia."
"It was operating in southern Iraq to gather information on our strategic sites and our anti-aircraft defenses," the spokesman said.
On Saturday, Iraq said that an Iraqi civilian was wounded when US and British warplanes launched an airstrik on Iraqi radar stations in the north of the country.
US and British planes started enforcing a "no-fly" zone in southern and northern Iraq following the 1991 Gulf War - Albawaba.com
