Friday's €500,000 winning EuroMillions ticket was sold in Abbeyfeale, Co Limerick.
Lotto chiefs revealed this morning that the 'Advanced Play' ticket was bought at Twohig’s SuperValu store in the town.
The winning numbers were 05, 08, 15, 32 and 33.
Shop owner Michael Twohig is no stranger to a big Lotto win, with a €2.7million jackpot ticket being bought at another one of his stores in Askeaton last December.
He said: “This is incredible news and everybody at the store is just over the moon for the lucky winner, whoever they may be.
"It’s a nice feeling for everybody involved in the store to know that you’ve sold a winning ticket which will bring incredible life-changing opportunities to somebody’s life – it’s just magical.
"We’re going to enjoy the celebrations and hopefully the lucky winner will check their tickets today and realise their huge win."
A spokesman for the National Lottery added: “Our players really are on a roll in the EuroMillions game this year.
"This is the 25 top prize win of €500,000 in the EuroMillions Plus game on top of the record breaking €175 million jackpot which was won by a lucky North Dublin family in February.
"We are encouraging anybody who purchased their ticket at the SuperValu store in Abbeyfeale in Co Limerick, to carefully check their ticket and if it is the winner, be sure to sign the back of the ticket and contact our prize claims team on 01 836 4444 and we will make arrangements for you to claim your prize”.
