A casino resort in Macau has reportedly lost HK$600,000 (US$76,849) in at least seven incidents this month involving fake gambling chips.

The city state’s Judiciary Police told GGRAsia that the casino resort—which authorities declined to identify—has been targeted seven times since July 19. The latest incident took place on Saturday, according to the report.

Public broadcaster TDM reported the latest incident on Monday, in which it showed images of fake gambling chips that carry the name of Galaxy Macau, the flagship property of casino operator Galaxy Entertainment Group.

According to the report, the Judiciary Police arrested two men from mainland China on charges of using counterfeit gambling chips in a casino in Cotai. The men were believed to have received the fake gambling chips “as soon as they arrived in Macau.”