Nearly €3m in Lotto winnings is yet to be claimed in the west of Ireland, and the winner has just hours to cash in their prize.
The mystery person bought the ticket on November 29 last year, in Tesco in Claremorris, Co Mayo.
The manager at Tesco says it was a €3 quickpick, and the shop is not far from Knock Airport so the winner could be someone abroad.
There was also a Mike Denver dancing gig that weekend in Claremorris, so it could be a visitor to that.
The singer himself has even urged his fans to check, saying: "It could be you".
@patmcgrath@irishlotto #winningticket sold in #claremorris during my #dancingweekend COULD BE U pic.twitter.com/vPtFNuBJnb
— Mike Denver Music (@MikedenverMike) February 26, 2015