The Department of Foreign Affairs is to follow up reports that two more suspects in the killing of a Hamas commander in Dubai were carrying Irish passports.
The European Union has expressed outrage at the murder of Mahmoud al-Mabhouh and the alleged use of forged EU passports in the killing.
Mabhouh, a founder of Hamas' armed wing, was found dead in his hotel room in Dubai on 20 January. Dubai has accused Israel's Mossad agency of carrying out the assassination. Israel has declined to confirm or deny any involvement.
To date, five people involved are alleged to have been carrying Irish passports.
A spokesman said the Department would be liaising with the Irish Embassy in Abu Dhabi, the British government and the EU in order to confirm the accuracy of the report.
Meanwhile, it has been confirmed that a vacant property in Dublin was given as an address by one of the five assassination suspects with fake Irish passports.
The property is owned by James Reynolds, a brother of former Taoiseach Albert Reynolds and father of music promoter John Reynolds.
The terraced, red-brick house on Elgin Road, Ballsbridge, Dublin 4, has been vacant for ten years. Mr Reynolds has owned the property since the 1960s.
The property's address was given to a hotel in Dubai as the home address of a man travelling under the name of Kevin Daveron.
He was named last week by Dubai police as one of up to 18 suspects implicated in the assassination of Mabhouh.
The Reynolds family says it is absolutely shocked and knew nothing about what had happened.
