Washington ( CNN ) -- Iraqi authorities have shared information obtained from captured insurgents who claim al Qaeda is planning suicide attacks in the United States and Europe during the Christmas holiday season , a U.S. official said Thursday . The official said the threat report is being taken seriously , but there is no intelligence indicating there is a specific or credible threat against the U.S. homeland . But , the official added , al Qaeda in Iraq remains a dangerous force . The official indicated the United States remains vigilant , especially during the holidays , in light of what happened last Christmas -- a reference to the failed attempt to blow up an airliner over Detroit . Another U.S. official said `` we are looking closely '' at the information coming from Iraq . Interpol spokesman Pietro Calcaterra told CNN that `` we have received information from our office in Baghdad about possible al Qaeda attacks on U.S. and European targets . '' He did n't elaborate . Two Iraqi officials , Foreign Minister Hoshyar Zebari and government spokesman Ali al-Dabbagh , are saying there is no specific information about a Christmas attack . The U.S. military in Baghdad told CNN the American mission in Iraq `` will work closely with the government of Iraq and our interagency partners to help determine the extent of any potential threat . ''
No specific threat is indicated against the United States . An `` underwear '' bomber tried to bring down a U.S. plane last Christmas .