Until Japan’s legislators finally get around to legalizing casino gambling, you can expect a lot more stories like this one.

On Wednesday, Kanagawa Prefectural Police announced that they’d busted an illegal baccarat casino in the Kohoku Ward of Japan’s second largest city Yokohama. The casino, known as Tiger, reportedly earned revenue of ¥1b (US $9.6m) in the 10 months that it had been operational.

TV Asahi quoted police saying they’d detained four suspects, including Kiyoharu Kishi, Tiger’s 51-year-old manager. Kishi and two of his fellow detainees have already admitted their guilt while the fourth suspect is reportedly employing the Shaggy-inspired ‘wasn’t me’ defense.

Acting on an anonymous tip, police placed Tiger under surveillance for five days before launching their raid on the venue, which was based in a commercial building in a business district. The venue was equipped with a video camera to monitor the entrance, which apparently proved insufficient in giving Tiger’s operators enough time to dispose of incriminating evidence.