The general rule is never talk to police. If you are calling police for emergency (911) type help, you should be aware that anything you say could be used against you. Although, there are circumstances where talking to the police has resulted in cases being dismissed or not even charged in the first place, the general rule will always be never talk to the police. http://www.youtube.com/watch?v=6wXkI4t7nuc
I am an Arizona criminal defense attorney and would like to discuss your specific case with you via a free consultation. Please call me at (480) 818-9943.