Three senior gardaí are due to travel to Lebanon today to investigate the assassination of the country's former prime minister, Rafik Hariri.
Mr Harari, who led Lebanon for much of the time since the end of the 1975 to 1990 civil war, was killed in a car bombing in Beirut earlier this month.
Deputy Garda Commissioner Peter Fitzgerald, Chief Superintendent Martin Donellan and Superintendent Pat Leahy have been assigned to investigate the killing following a request to the Government from United Nations Secretary General Kofi Annan.
Lebanon's opposition has accused the Syrian government of involvement in the Hariri assassination, though the Syrians have flatly rejected the claim.
The murder was claimed by a previously unknown Islamic group.