New rules are in effect for B.C. casinos to keep track of high rollers.

Effective Wednesday, all cash, bank drafts and certified cheque buy-ins worth $10,000 or more have to be accompanied by a receipt showing the financial institution, branch number and account number the money came from. B.C. Lottery Corporation says the rule also applies to a series of transactions by any player totalling more than $10,000 over a 24-hour period.

An investigation is triggered if the player won鈥檛 provide the information or gives information that is 鈥渃learly suspicious,鈥� BCLC said in a statement.

The new rule is in addition to the detailed identification casino staff collect on customers spending more than $10,000. It is one of the interim recommendations provided by Peter German, an expert on money laundering hired last year by B.C. Attorney General David Eby to review the security at B.C. casinos. An discovered several suspicious transactions, including $13.5 million in $20 bills accepted at the River Rock Casino in Richmond in 2015.

German, a lawyer and former deputy commissioner of the RCMP, is expected to submit his final report this spring.