The person initiating these calls speaks in very broken English, very poor grammar, and in a heavy accent.
Left voice mail, begins mid-sentence saying the next 24 hours will be taken into custody by local cops as there are 4 serious allegations pressed on your name at this moment we would request you to get back to us so that we can discuss about this case before taking legal action against you the number to reach us is then they repeat the number.
Called at 5:30AM. I picked up phone but said nothing, heard nothing and after a couple seconds caller disconnected.