There was "an issue with one of the participating countries".
All eyes are on Friday night's Euromillions draw, as the €175 million jackpot is the second biggest in the history of the draw.
However, the National Lottery took to social media to announce a delay in the announcement of the numbers, but that the results would be published as soon possible.
https://twitter.com/NationalLottery/status/967149541794484224
We will update once the EuroMillions numbers and raffle numbers have been officially posted by the National Lottery online.
More to follow.