In the last couple of years in N Ireland, Antrim, there was a spate of sightings, which actually spilt over into the Republic, mainly County Monaghan. The British Army were called in to try and catch the cat in the North, (there were similar scenes outside a little place called Tully in Monaghan).
After a few days the army suddenly and without warning abandoned their search stating that they believed there was no cat loose.
Although locals believed differently and were prepared to say so on national Television. They say that if the army saw nothing then what was it they were actually shooting at while out on the search. This was apparenty witnessed by several people.
"Leaked sources" (don't know :) also state that the army did actually kill an animal, but because it was so big and "unusual" not knowing what it was (?) they decided to keep the incident quiet so as not to cause panic.
If anyone knows, or has anyone further information on this, I would be happy to hear from them. In fact any sightings, incidents from Ireland north or south would be welcomed.

Email here in confidence