A group of men who ran a multi-million dollar Costa Rica-based sports betting website have been charged with illegal gambling and money laundering offenses, in the latest example of US authorities’ crackdown on internet gambling.

Authorities across the US have been pursuing a mounting number of cases against internet gambling companies, and businesses that offer services such as money transfers for them, over the last 18 months. Attempted prosecutions have been mounted on internet gambling companies and executives in Missouri, Louisiana, New York and Florida.