im on parole in california and a officer made contact with me. i told him my name and that i was on parole witch is required by law. for whatever reason, im guessing previous prison charges, he and his co-workers were not too happy to find me not in violation of the law so decited to arrest me for under the influence. i was not and a blood test confirmed that. however after my arrest my car key was missing from my property. i went back to the location of my car to find it gone. they impounded it. is this legal?