How to identify the owner of a Bitcoin address? My father's computer was infected with a CryptoWall virus. The virus attacker asks for Bitcoins to send me an app to decrypt my our files.

Is there any way to identify the Bitcoin address owner?

How can I identify his country? How can I let his local police know about this cyber crime?

I didn't send him Bitcoins.

See: http://www.bleepingcomputer.com/virus-removal/cryptowall-ransomware-information
First off, I'm glad you didn't send money as that often does not help in these situations. As for tracking the attacker through their bitcoin address, I'm sorry to say but most likely that is not possible. It's impossible to determine the location of a bitcoin address without some sort of identification tied in. They also most likely would tumble the bitcoins before sending them to any address actually tied to their identity.

You could give all the information you possess to your local police but most likely there is not much more they can do. These type of scams are pretty safe to commit sadly.