The Department of Foreign Affairs has confirmed that the body found in the Polish town of Bydgoszcz is that of Irish soccer fan James Nolan.
The 21-year-old environmental engineering student from Blessington in Co Wicklow was last seen in the early hours of Sunday in Bydgoszcz, which about 130km northeast of Poznan.
He and his friends, who were travelling in a camper van, stopped in the town on their way back from Gdansk to Poznan when Mr Nolan became separated from the group.
The Tánaiste and Minister for Foreign Affairs has offered his condolences to James' parents, family and friends.
Eamon Gilmore said the Irish Ambassador to Poland, Eugene Hutchinson, is remaining with the family.
He said the Irish Embassy in Warsaw and Consular officials will provide all possible assistance to the Nolan family so that James' remains can be returned home as soon as possible.
Speaking on RTÉ's Morning Ireland, James's uncle Pat said Polish authorities had made a huge effort to try and find his nephew.
Mr Gilmore thanked the Polish authorities and emergency services search teams and the people of Bydgoszcz for their efforts to find the young student.
Mr Gilmore said: "Throughout the Euro2012 Championship Irish fans in Poland received a warm and generous welcome.
"But, in particular, the solidarity and support we have received since James was reported missing, has been extraordinary and I am deeply grateful".