A Crown Resorts casino croupier has been charged with rigging a dice game in order to illegally pay out over $100k to five of his friends.

According to local media reports, the unidentified 20-year-old croupier was detained last October after Crown Melbourne casino security caught on to the scam, which involved improperly paying out on sic bo wagers to five accomplices. The accomplices were also arrested and charged with obtaining property by deception.

Police say the croupier and his accomplices would meet up in a car park at Melbourne University, where the croupier was a student, to divide their ill-gotten gains. The croupier reportedly received 65% of the bogus winnings, while his friends split the rest.

Casinos are on high alert for such internal thefts, which rarely escape the surveillance cameras’ all-seeing eyes for very long. In November, Connecticut’s Mohegan Sun casino accused a blackjack dealer of overpaying customers $78k while the previous month saw the Bellagio in Las Vegas accuse two craps dealers and their accomplices of a $1.5m scam.