UAE the United Arab Emirates wing is suspected in the Christmas Day bomb plot . Ties are seen to last week 's bombing attempt . The U.S. official said that testing on the devices is ongoing , but the assumption at this point is that the lead azide in the syringe was supposed to be an improvised blasting cap . Investigations are being carried out in Britain and Yemen .
UAE the United Arab Emirates wing is suspected in the Christmas Day bomb plot . Ties are seen to last week 's bombing attempt . Investigations are being carried out in Britain and Yemen .