Generate an appropriate single-sentence summary for the given text such that it includes the main topic of the text.

A search has been mounted to find the buyer of the ticket, which scooped £3,062,272 in a quadruple rollover draw on Wednesday, 17 December. Five tickets shared a total of more than £15m, but one winner, who bought their ticket in the Stirling Council area, is yet to come forward. The ticket holder has until 15 June to claim their prize. A spokesman for the National Lottery said: "We're eager to find the mystery ticket-holder and unite them with their winnings - this prize could really make a huge difference to someone's life. "We're urging everyone who bought a Lotto ticket in this area to check their old tickets again or look anywhere a missing ticket could be hiding." The Lotto draw can only roll over four times, so when no entry matched all six numbers in the 17 December draw, five tickets which matched five numbers plus the bonus ball shared the prize pot of £15,311,360. The winning numbers were 2, 19, 24, 33, 35 and 46, and the bonus ball was 12. If no-one comes forward within the 180-day deadline, the money will go towards National Lottery funded projects across the UK.
A National Lottery prize of more than £3m has gone unclaimed from a ticket bought in Stirling.