This comes after a similar warning issued in July.
In a statement, the two bodies reminded residents of Poland that gambling illegally is an offence and is subject to a fine of up to PLN4.4m (£841,206/$1.1m/€975,740) as per article 23, sections one and three of the fiscal penal code.
Fines would be the entire amount of winnings received – including money staked or lost – up to that total.
In addition, the statement outlined that legal slot gambling can only take place in gaming arcades on Totalizator Sportowego slot machines – which is part of Totalizator Sportowy’s monopoly – or in any licensed casino.