Tax officers swooped down on a hundred gambling facilities across Slovakia, sealing and confiscating machines during the two-day illegal gambling bust.

The raid, which was carried out on June 28 and 29, was considered to be the biggest action since the newest gambling law took effect earlier this year, according to The Slovak Spectator.

Authorities reportedly confiscated five of the so-called quiz machines and sealed 75 gambling units during the simultaneous raids in the country. They conducted a test run on the machines to determine whether they were used for gambling. Tax officers also seized the 2017 and 2018 accounting books of four companies that were believed to be operating the quiz machines for gambling.

Ľudovít Makó, chief of the Financial Administration’s criminal department, was quoted by the news outlet saying, “In some facilities the gambling machine was turned off during the investigation, while in the others there were missing internet connections and power supplies.”