( CNN ) -- Ireland has expelled an Israeli diplomat over the use of forged passports in the assassination of a Hamas arms dealer in Dubai , allegedly by Israeli agents , the Irish foreign minister announced Tuesday . Ireland is following in the footsteps of the United Kingdom and Australia , which each kicked out Israeli diplomats after concluding Israel had probably forged their countrys ' passports as part of a Mossad operation against Mahmoud al-Mabhouh , a founding member of Hamas ' military wing . Ireland had not been able to link Israel conclusively to the forgery , Foreign Minister Micheal Martin said Tuesday . But `` the fact that the forged Irish passports were used by members of the same group who carried the forged British and Australian passports , leads us to the inescapable conclusion that an Israeli government agency was responsible for the misuse and , most likely , the manufacture of the forged Irish passports associated with the murder of Mr. Mabhouh , '' he said . Israel 's Foreign Ministry said it `` regrets the decision of the Irish government , which is not in line with the importance of our relationship . '' Israel maintains there is no proof linking it to the doctored passports or the killing of Al-Mabhouh . Al-Mabhouh was found dead in his hotel room in Dubai in January . Police believe he was killed the night before and suspect the Mossad , the secretive Israeli foreign intelligence unit , was behind his killing . Israel has a stated policy on security matters of neither confirming nor denying involvement .
Dublin says Israel forged Irish passports . Used weapons allegedly used by Israel that killed Hamas co - founder . Australia and Ireland also expelled diplomats . Israel says no evidence links it to killing .