My ex-boyfriend has nude photos of me that he is threatening to send and distribute to others, what are my rights?

Question Details:

Things have ended and he is now threatening to send them to others or post them online. What can I do? I realize that he will probably be able to post them before I can stop him. What can I do after? He was threatening to send them to people I know if I wouldn't speak or meet with him. I told him that it was blackmail and that I would go to the police if he continued. He said they were his pictures to do what he wanted with. They were not copyrighted. Important Notice