Police are investigating the discovery of a suspected human skull.
The find, on the shore of Strangford Lough between Newtownards and Comber, Co Down, was made by a member of the public.
A spokesman for the PSNI said identifying the skull may take some time.
"The police investigation will be impacted by tidal movements and it may be some time before police are able to provide further clarification," a statement said.
The discovery is not being linked with any other investigation at present.