2b) priests can be arrested by a noble with a police unit only if they are members of the same realm as the arresting noble, or are at war with the arresting noble. In addition, they must be in a region owned by the arresting noble's realm, or in a regon under a TO.
I am currently trying to arrest a priest but I have no option.
I have a police unit.
My realm is at war with the priest's realm.
We are both currently in a region controlled by his realm, but it is under a takeover.
From what I gathered I should be able to get him?