The owner of a £116,304 Lottery ticket is being called on to come forward as the prize remains unclaimed.
The winning ticket, bought in the Boroughs of Antrim and Ballymena, matched five numbers and the bonus ball in the Lotto draw on December 18, 2013.
The winning Lotto numbers on that date were 2, 7, 25, 35, 40, 42 and the bonus ball was 13. The lucky ticket-holder has until June 16 to come forward and make their claim.
If no one comes forward with the winning ticket before the prize claim deadline, then the prize money, plus the interest it has generated, will go to the National Lottery Good Causes.
A National Lottery spokesperson said: "We're desperate to find this missing ticket-holder – this really could be the best way to have the last laugh this April Fools Day."