A €29m EuroMillions jackpot has been claimed by a syndicate from the west of Ireland.
Lottery chiefs revealed that the group collected their cheque in the offices in Dublin and chose to keep their identities secret.
A spokesman for the group said the life-changing impact of the win is only just sinking in.
"This has come as a huge shock but we are thrilled. This will certainly make life easier for us all and will secure our futures," one of the winners said.
The syndicate learned of the huge jackpot when one of the members checked the EuroMillions' numbers last Saturday.
"It has been a rollercoaster week with lots of butterflies in our stomachs and lots of different emotions.
"But we are keeping level heads and we will try to take it all in and we will give it time before we decide what to do with our winnings."
The winning quick pick ticket was purchased from Umesh Kumar's Garryduff XL Store on Pound Road in Castlebar, Co Mayo, last Friday.
National Lottery chief executive Dermot Griffin said he was delighted to hand over the winning cheque to the syndicate.
"It is important these winners take the time and space to let the news sink in," he said.
"This is an incredible amount of money to win, and we have recommended that the winners get independent financial and legal advice."
It is the second EuroMillions jackpot win for Castlebar.
In April 2014, a jackpot worth €15m was claimed on a ticket sold in Staunton's Costcutter Express in the town.
On that occasion, the winner did not go public.
It is also the 11th time a EuroMillions jackpot has been won in Ireland.
A Dublin work syndicate in January this year shared out an €88.5m jackpot.
The country's biggest win remains Dolores McNamara from Limerick, who took home €115m in 2005.
