DUBAI, United Arab Emirates - Emirati officials say at least two more fraudulent Irish passports have been linked to the alleged hit squad accused of killing a Hamas commander in Dubai.

They also say some of the 18 suspects visited the Gulf city for a reconnaissance mission at least once before the Jan. 19 killing of Mahmoud al-Mabhouh in his Dubai hotel room.

The officials, who are close to the investigation, spoke on condition of anonymity Sunday because they were not authorized to speak to the media.

The latest allegations mean the list of fraudulently obtained passports tied to the killing include six British, five Irish and one French and German. Two Palestinians are in custody and three suspects remain unidentified.