I just logged in and noticed the same thing happened to me, someone had knocked a hole in my wall next to my locked doors. I lock my chests and there doesn't seem to be any other damage that I've noticed but why didn't they at least put the wall back the way it was?
I can understand people are curious and want to check things out so I think I'll leave my doors unlocked from now on. I wouldn't mind an admin looking to see who it was that knocked that wall out, they might not know they were doing anything wrong.