Some kind of scam,
http://abclocal.go.com/wpvi/story?section=news/local&id=9191250
the police virus is old news
https://www.google.no/search?q=police+virus&ie=UTF-8&oe=UTF-8&hl=nb&client=safari
First I heard about this,it was reported on our local news yesterday.
I found this http://sitecheck.sucuri.net/results/abclocal.go.com 
There is also the other side of the coin. On this one, this ransonware ( Ukash ) allowed the arrest of a wanted child pornographer:
http://forum.avast.com/index.php?topic=28748.msg971286#msg971286