Lotto bosses are urging punters in Cork city to check their tickets after €209,809 was won in Saturday's draw .
The lucky player matched five numbers plus the bonus ball to scoop the monster sum.
They bought their winning Quick Pick ticket at JJ O'Driscoll's Superstore on the Ballinlough Road.
Delighter owner Neil O'Driscoll said: "We're absolutely over the moon!
"We got the all-important call from the National Lottery this morning and I think we're still in a bit of shock - god only knows how our lucky customer feels, it’s just brilliant!
"We're definitely a lucky Lotto store for our customers.
"We have previously sold two Lotto jackpot winning tickets in 1991 and 1992 so we were definitely due another big win!
"We're going to start the celebrations in the shop this morning and we're calling on anybody who is in the area to come into the store and check those tickets, it could be worth over €200,000."
Saturday's €7.5million jackpot was not claimed, meaning Wednesday's top prize will be an estimated €8million.
The winning numbers for the Lotto draw were: 04, 29, 30, 33, 40, 42 and the bonus was 41.