There's a group of scammers from China who are posing as employees of the Chinese Embassy, they will also direct you to a Beijing police department.
If you speak Chinese:
Please do not respond to these calls. The Chinese police cannot arrest you in Australia without contacting the Australian police, and they won't call you to let you know they are coming. Police officers in general don't ask you to transfer money or ask you about your bank account.
I've heard a lot of people, especially Chinese international students and elderlies are getting scammed of all their money (Myself, family and co-workers have all received these calls regardless of ethinicity). The police are aware of this scam. However, there isn't much they can do.
I know that the Ozbargain community are very sharp, but I think it's good to spread the awareness of this scam before it's too late.
Download Mr Number app on your phone, and let it block all calls from the number. Done.