A EuroMillions winner has just four weeks to claim their jackpot after scooping a whopping £57million this year.
The massive rollover prize is yet to be claimed from a ticket bought in Ayrshire in March.
The winning ticket needs to be cashed in by the deadline next month on September 13 or the money will be lost for good.
If the ticketholder comes forward to claim their jackpot, they will instantly become a millionaire and be bumped up onto Scotland's rich list.
The winning numbers for the draw were 05, 07, 08, 16 and 20, with the Lucky Stars 2 and 12.
Andy Carter, of the National Lottery, said: “We’re desperate to find this mystery holder and unite them with this massive prize.
“We’re urging everyone who might have bought a ticket in this area to check.”
This is not the first time a ticket has gone unclaimed, in 2012 a £65million EuroMillions jackpot bought in Hertfordshire was also given to good causes.
In 2018 alone, £125.1million went unclaimed across all lottery games.
The deadline for players to claim their winnings is 180 days from the day of the draw.
Camelot spokesperson said: “The vast majority of prizes that start as unclaimed do get claimed before the deadline.
"Whether that be on the back of publicity activity we have undertaken to raise awareness of the prize or because a ticket-holder has claimed late for whatever reason (on holiday at the time of the draw and immediately after, busy lives, habitual checking).”
The spokesperson added: “It is important to note that if a prize is never claimed, despite our best efforts, then we can only speculate as to the reason why.
“It is reasonable to assume that there have been cases where tickets have been lost, which is why we place an emphasis on playing online so that your ticket won’t be lost, but also that ticket-holders have been unaware.
