Stated they were the tax office and that fraud had been reported under my name. Further stated that it was my last chance to make contact before I got arrested (insert eye-roll here). It was a recording of a male English accent deep radio type voice and sounds quite official when it started giving me a number to call I hung up.
Obviously a scam, please don't be taken in by these people never call the number stated; look up an actual ATO phone number if you are truly worried and call that.