Will 'give away' prize
Tesco Ireland, the Irish arm of supermarket group Tesco, is to give away a €500,000 (US$713,000) Euro Millions prize it won by accident on April Fool's Day.
The retail giant is understood to have won the huge prize inadvertently last week. A customer had asked for a €4 quick-pick ticket but was issued with a €9 ticket by mistake.
The customer was then issued a new ticket, while the €9 ticket was locked inside the cashier's register.
However, the following morning the National Lottery contacted the store in Navan, Co Meath, to tell them they had sold a winning ticket.
Tesco said in a statement that it was "delighted" its store in Navan sold the winning ticket for last Friday's Euro Millions draw.
It added that the outlet is checking the details at the moment.
"If we are lucky enough to hold the winning ticket we will be giving the money away," Tesco said.
Rather than being won in the primary Euro Millions drawing, the 'mistake' ticket won the Plus add-on game that is exclusive to Ireland. It is known locally as Euro Millions Two.
The Plus game features 5 numbers drawn from a pool of 50 numbers. The mistake ticket won the top Plus prize of €500,000 by matching all 5 numbers. Other prizes available in Plus include €2,000 for matching 4 numbers and €20 for matching 3 numbers.
Last Friday's winning Plus numbers were 1, 8, 36, 38 and 46.
Tesco has had Euro Millions success before.
In November 2009, Les Scadding bought his £45.5m winning ticket on a shopping trip to a Tesco store in Wales.
Limerick woman Dolores McNamara scooped the biggest prize in the competition's history after she won €115m in 2005.
Euro Millions changing
Changes were announced to the Euro Millions lottery last month, making even larger jackpots and creating more chances to win.
The changes include a second draw day on Tuesdays, as well as expanding the number of Lucky Stars, which should result in more rollovers and bigger jackpots.
The overall odds of winning a prize on the game will go from 1 in 24 to 1 in 13.
The total number of prizes every week in Europe expected to more than double from €1.9m a week to €4.6m.
Tickets for the new-look game are due to go on sale on Saturday May 7, with the first Tuesday draw taking place on May 10.