The Netherlands Gambling Authority (KSA) has fined Costa Rica-based Chestoption Sociedad de Responsabilidad Limitada €3.1 million (US$3.59 million) for illegally offering online gambling to Dutch players without a licence.

The regulator found that Dutch players were able to register, deposit funds, and participate in online casino games through three websites operated by the company: Vave.com, Vave-luck.com,...