Three Americans have been kidnapped by "militias" in the Iraqi capital Baghdad, the pan-Arab news channel Al Arabiya reported on Sunday, citing its own sources.The U.S. embassy in Baghdad said it was aware of the report, but could not make any further comment for now.Meanwhile, The U.S. government stated later on the same day that it was aware of reports that three U.S. citizens have gone missing in Iraq and is working with Iraqi authorities to find them."We are aware of reports that American citizens are missing in Iraq," the State Department official, who spoke on condition of anonymity, said when asked about the news channel Al Arabiya's report that three U.S. citizens were said to have been kidnapped in Baghdad. "We are working with the full cooperation of the Iraqi authorities to locate and recover the individuals," he concluded.