Nah. Reporting crimes after confession is a slippery slope. When you confess you do so because you feel deep guilt and remorse for what you did. If you put priests in jail for one crime, what happens if you confess a different one? What if someone confesses they stole something? Should the priest report this to the police or face jail time? Further more, priests have a deep conviction of this. They are willing to die than tell what someone confessed. This is church policy as well. Finally, this is something the average church goer respects. I personally respect priests for this a lot. In the end, you'd have a situation where you've put the priest in jail and just made people mad at you. If someone confesses an awful crime like that, a priest would and should suggest they turn themselves in and will not absolve them of their sin until they do. Since people who confess do so out of guilt, there's a large likelihood they would and the priest is praying that the goodness of the persons humanity that they take his advice and turn themselves in. Trying to force priests to reveal confessions would just make the Church stronger as you are forcing them to break an oath that is sacred.