British Columbia’s attorney general is slamming the province’s former government for burying a report into allegedly rampant money laundering at one of its land-based casinos.

On Friday, Attorney General David Eby released a year-old report into allegations of money laundering at the River Rock Casino Resort in Richmond, a suburb of Vancouver. A redacted version of the report can be read here.

The report reveals that River Rock was prone to accepting single cash buy-ins in excess of C$500k (US $405k), mostly from “high roller Asian VIP clients” who often displayed “no known source of funds.”

River Rock reportedly accepted $13.5m in $20 bills in July 2015 alone, with a lot of these large transactions involving “unsourced cash” being “dropped off at the casino or ‘just-off’ casino property for patrons at unusual times, generally late at night.”