I believe that the authorities can't put charges on a priest. A killer can tell everything to his lawyer, but yet that lawyer has no right to tell anyone what he's been told. Same goes with the priest.
Yeah if i were the priest i would'nt say anything. If they asked me if i knew anything about the thief i'd say "Lord knows if there was a thief like that or not". Cuz the Lord does know, however i never said that i don't, lol. That or sth like what elmage ^ said.