The Irish Minister for Foreign Affairs, Micheal Martin, has been told by his Israeli counterpart, Avigdor Lieberman, that Leiberman has no information about Israeli involvement in the killing of a Palestinian Hamas official in Dubai last month.
The two foreign ministers held a 40-minute meeting in Brussels and Martin pressed Lieberman on the fact that five of the alleged killers had legal Irish passports
Following the meeting Martin said the investigations by the European Union would continue.
The issue has caused a major rift with Israel as it endangers E.U. passport holders in the Middle East
"We are extremely concerned that European passports... can be used in a different manner for a different purpose," Spanish Foreign Minister Miguel Angel Moratinos told reporters as he arrived for a meeting.
"We (the EU ministers) are going to discuss it and I hope we will issue a statement expressing our concern about this situation," he added.
The Irish passports were owned by ordinary citizens who were shocked to find their names connected to the murder case.
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