James Nolan, the Republic of Ireland fan who has been missing since Saturday, has reportedly been found dead in a river in Poland.
A Polish prosecutor told state news agence PAP personal documents belonging to Mr Nolan accompanied the body and added initial tests did not suggest there had been any foul play.
The 21-year-old, from Blessington in County Wicklow, was last seen in the city of Bydgoszcz between 01:00 and 01:30 BST on Sunday morning.
Prosecutor Len Bojarski told Reuters: "I can confirm that the body of a young man was pulled out of the river by divers.
"At the moment, we suspect that it is the missing Irish fan.
"There is a chance that the family will arrive in Poland later today and we will ask them to identify the body. Then we'll know for sure."
Mr Nolan had travelled to Eastern Europe for the Euro 2012 finals with 10 other friends via a camper van.
They had stopped in Bydgoszcz and it was when they were on their way back from Gdansk to Poznan that Mr Nolan became separated from the group.
The Irish Department of Foreign Affairs has stated the body will be identified by Wednesday evening at the earliest.