I had the same question. Anyone from Ireland here that might have any idea at all what that's about?
I now understand what you're saying, but the way it's phrased in the article makes it seem like they need to know where it came from for ritualistic and supernatural reasons. Like there are rituals the anthropologists have to perform, not that they might have ritualistic use in the past.
It's a weirdly written sentence.
Or maybe I've just been awake for too long.
Here is the link: https://www.museum.ie/en-IE/News/Appeal-for-information-abou...
TBH I have no clue what the word "religious" means outside of abrahamic faiths. Might as well be a meaningless word. Anyway, the supernatural certainly encompasses many aspects of religion without implying anything about aliens.