At least three Iraqis were killed and 10 others wounded in car bomb explosion in southern Baghdad on Tuesday, an Interior Ministry source said.
A booby-trapped car parking near an intersection in Jadriyah neighborhood detonated at about 1:45 p.m. (0945 GMT), killing at least three people and wounding 10 others," the source told Xinhua on condition of anonymity.
Earlier, a ministry source and witnesses told Xinhua that a U.S. helicopter went down by gunmen's small arms fire in central Baghdad.
"I can confirm that a U.S. helicopter had come under fire in the Fadhel district around two hours ago and went down in a residential area of Sheikh Omer," the source said.
Witnesses also confirmed the helicopter crash, saying that fierce clashes broke out between the gunmen and the U.S. patrol.
But other media reports, citing U.S. military source, denied an American helicopter was shot down.
U.S. and Iraqi army forces were engaged in fierce fighting with gunmen in two neighborhoods of the capital, Fadhel and Sheikh Omer. An anonymous U.S. military official said an American helicopter involved in the battle came under ground fire but was not shot down.