Church authorities in Salt Lake City are investigated the case of a communion host that appears to be bleeding.
The consecrated host was reportedly placed in a glass of water by a priest to whom it was returned during Mass.
Three days later, churchgoers at St Xavier Church in Kearns reported the host had not dissolved and appeared to be bleeding.
For a short time the host was on display, before Salt Lake City diocese took possession of it and launched an investigation.
The results of the inquiry will be made public.