Toronto police are warning the public about an ongoing Canada Revenue Agency telephone scam.

Police say it begins with someone phoning and claiming to be with the C-R-A.

The scammer then says the person they called owes overdue taxes.

The callers are said to be aggressive – and they often claim an arrest will be made if money isn’t paid immediately – either through Bitcoin or other crypto currencies, gift cards, credit cards – or through Western Union.

The force says C-R-A will never request payments by prepaid credit cards, gift cards or through Bitcoin or any form of crypto-currency – and they assure the public that the agency will not send police after people.