Let me get this straight: this person is known to have committed several murders before his baptism, but he is obviously repentant so is good to go. But, he smoked some weed after his baptism, so he must be questioned and punished accordingly. For smoking weed. But not for the multiple murders he committed in the past. Are you kidding me???
Personally, I think penitent-clergy confidentiality is a crock of crap. Ok, maybe it could pass the sniff test if it only applied to "sins" that did not involve any unwilling participants. Fine. But it should not apply to any type of mandatorily reported crime, especially if it involved violence or sexual abuse against anyone, child or not. No one should be allowed to hide behind religion to avoid the consequences of crimes against others.