Stolen car ensures…costs for return??

Hello together, I hope you can continue to help me. My car an Audi A5 was stolen last October and the insurance had refused to pay because I had not parked the car in the garage in the time. I had honestly given up the case. Yesterday I get a letter from my lawyer that the car was secured abroad. Of course I was very pleased. Those of the Kripo want to know if I had money from the insurance back then and if not, if I am interested in a return. What costs such a return and do I have to take over the costs completely now? Since the insurance at the time did not pay, I strongly assume that I have to bear the costs. But would I be interested in how this is going on now. Do I get the address of the Kripo in the country where it was secured and then pick up the car on my own? What about customs and all these topics? Would someone be nice if has experience and this would share.