Got a pre-recorded voice from what I think they said was a Department of Home Security (or something like that) that I was being investigated and there was a warrant for my arrest. Then said press 1 for more information. So I hung up.
The challenge is it showed up with a mobile number so thinking it is a real person calling me so I answered straight away. However there was a delay from their end so you know its quite dodgy when there is no connection straight away. Usually I won't say anything until it is a live person that actually wants to talk to me rather than the spam and fraud stuff.