In America – NEVER, NEVER, EVER agree to a Police Interview. Always say, I want to speak to my Lawyer and if you must, sit there with your mouth closed and say absolutely nothing.
In Aussie – Say, I’d love to help you, but I have nothing to say at this time and if you must, keep repeating that. If the police have sufficient grounds to charge you they will do so, but you have done the best for yourself and not incriminated yourself