An angling club official is waiting for a response from the RSPCA, after reporting the find of four swans' heads in Buckinghamshire.
Steaven Cooper filed his report today, after finding four heads close to Mount Farm Lake, Milton Keynes, during the last three weeks.
A spokesman for the RSPCA said in most instances, the deaths would've been caused by animals, but this could not be established without further investigation.
As he says he has contacted us, I am sure we will get back to him. It is something we would certainly look into. In the majority of such cases, it is down to animal kill, but we do not know in this case until we have looked into it.
More top news
A daughter kissed her "dead" mother goodbye - only to find out that the hospital had made a mistake and her mother was still alive.
A nurse trying to identify a badly wounded hit-and-run victim suffered heartbreak when she discovered it was her own brother.
So-called Islamic State has blown up yet another monument in the ancient city of Palmyra, activists say.