It's a tough question with so many elements to it, after all does protocol apply or is it a question of morality or just a sense of doing the 'right thing'. On the whole I agree with the majority that you should not have said anything, after all he was confessing to having an outstanding warrant not to a particular crime. I do wonder though if you are leaving yourself open by not reporting it. I seem to remember something from my first year law course that if someone confesses to have committed a crime or that they are about to and they 'draw strength' from you and go on to commit a crime or further crime then you could be considered as aiding and abetting. Obviously, if I've remembered this right, then they would need to go on to commit a crime. I believe that in the first instance though, you are there to treat an individual without any discrimination and the responsibility of reporting anything to the police or what ever rests with those further up the food chain. Good post cheers. P