The ticket was sold in Midleton in Co Cork on May 6th...
If you bought a EuroMillions ticket in Co Cork recently, it would be a good idea to double check your numbers today.
The holder of a ticket worth almost €400,000 has until 5.30pm today to claim their prize.
Nobody has come forward to claim the winning Quick Pick ticket, which was purchased in the Tesco store in Market Green Shopping Centre in Midleton.
It was purchased on May 6th, the same day as the draw.
The ticketholder can claim the €381,863 prize after matching five numbers and a Lucky Star in the draw.
The winning numbers were 32, 34, 40, 45 and 48 and the Lucky Stars were 1 and 10.
The National Lottery is encouraging the ticketholder to sign the back of the ticket and contact their claims team on 01-836-4444.
Today's deadline comes only a week after a €191,461 prize went unclaimed. That ticket was sold in Tesco in the Galway Shopping Centre.