Leeds is harbouring a mystery Lotto winner - and the hunt is on to find the lucky person before time runs out.
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The unknowing three-quarter millionaire has scooped 777,644 but the jackpot remains unclaimed more than two weeks after the original draw.
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Now National Lottery players in the city are being urged to check and recheck their tickets, or risk letting the life-changing cash slip through their fingers.
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All that is known is that the person is from the Leeds area because the winning ticket was bought in the region.
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A National Lottery spokesperson said: "We're desperate to find this mystery ticket-holder and unite them with their winnings – this amazing jackpot prize could really make a huge difference to somebody's life.
"We're urging everyone to check their old tickets again or look anywhere a missing ticket could be hiding.
"Try checking in the pockets of clothing, in wallets, bags and down the back of the sofa – someone out there could literally be sitting on a fortune.
"We have the champagne on ice and our fingers crossed that the lucky winner comes forward to claim their win."
The mystery winner matched all six numbers in the Lotto draw on Saturday, February 6, getting lucky with their selection of 3, 12, 15, 17, 22, 29 and the bonus ball 5.
The winner has until Thursday, August 5 to make their claim.
If no-one comes forward with the winning ticket before the deadline, the money, plus all the interest it has generated, will go to charity.