A deliberately buried sword with its point to the north and deliberately bent into a Z-shape bears witness to a particular ceremony in Mithraic liturgy. It could have been used for animal sacrifice. This oriental type became widespread in the western Roman world at the end of the 2nd century AD.
O. de Peretti, Un sanctuaire dédié à Mithra dans la colonie romaine de Mariana (Lucciana, Haute-Corse), in " Le mystère Mithra. Plongée au cœur d'un culte romain", catalogue d'exposition