In reply to yorkshire_lad2:
My condolences to the deceased's family & friends.
I'm trying to not speculate on the cause but the reports I've seen don't clarify whether this was a climbing related accident or whether it was a non climber who has tragically fallen from the top.
If it was a climbing related accident then I'm a bit mystified as to why there's no mention of the deceased's climbing partner since Castleberg is (IIRC) a sport climbing crag with a known reputation for looseness so I would have thought soloing is less likely (although roped soloing might of course be possible there).