Australian Federal Police are notifying crypto users about a rise in impersonation fraud. I can only speculate, but feel it is an educated guess that some loss occurred prompting a Police report and a Police response.
The scam appears to be a basic 'account locked' phishing email, impersonating the Binance exchange. Ordinarily this would go in the junk bin and promptly be added to spam filters, but the peculiar quasi-legality of crypto means the fraud filters on email security systems gather dust while this stuff proliferates.