Gardaí in Dublin are reiterating their appeal to anyone who may have visited Christ Church Cathedral between last Friday evening and noon yesterday to contact them.
It comes after a relic - the 12th century preserved heart of Saint Laurence O'Toole - was stolen from Saint Laud's chapel.
The heart of the patron saint of Dublin is kept in a wooden heart-shaped container sealed within a small iron-barred box.
Gardaí believe the theft occurred sometime between Friday evening and 12.30om yesterday afternoon.
They wish to speak to anyone who may have visited the chapel and who may have seen anything unusual or suspicious.