This could be under the investigation of cyber crime division, BUT does your government recognizes Cryptocurrency in your country in order to make legal actions regarding this case?
This could be a perfect example of a good feature for cryptocurrency to be regulated by the government. PROTECTION.
That's why I always say that cryptocoins being regulated is not a bad thing at all. It protects users from a lot of bad things. Sure, the govt takes a portion of your money, but it's worth it.