The killers of a top Hamas leader in Dubai last month used four more European passports to move around, and two of the four new passports discovered were Irish, according to a daily newspaper in Israel.

Mossad, the Israeli intelligence agency, is strongly suspected of having carried out the hit, but the Israeli government is denying any involvement in the killing.

However, the latest news that four more passports, two Irish and two British, were used will do nothing to ease the tension between the countries whose passports were used fraudulently (Britain, Ireland France and Germany) and Israel.

Irish Foreign Affairs Minister Micheal Martin and his Israeli counterpart Avigdor Lieberman met in Brussels on Monday and Lieberman assured Martin that he had no information about Israeli involvement in the killing of the Palestinian Hamas official in Dubai.

One of those alleged to have been behind the killing of the Hamas official in Dubai listed a Dublin 4 property as his home address.

EU Foreign Ministers met in Brussels the same day to discuss the killing and the use of EU passports in the incident, and they warned that as a consequence of last month’s killing, travel restrictions may apply to EU citizens going to the Middle East.