UK National Lottery operator Camelot has been fined £300k for “putting public confidence at risk.”

On Thursday, the UK Gambling Commission announced the six-figure penalty, which it imposed after Camelot published inaccurate Lotto Millionaire Raffle results on the National Lottery website on October 10, 2015. The UKGC said the incorrect winning numbers were online for an hour, during which they were viewed by over 100k visitors.

The UKGC’s investigation into the cockup determined that Camelot had violated its license obligations in two important respects: (a) players were misled, and (b) they were misled due to Camelot’s failure to observe proper processes and procedures.

The UKGC investigated two similar incidents involving Camelot publishing incorrect information in November and December 2015 but declined to impose penalties in these instances due to their “low impact.”