Claims that a "satanic cult" where children were abused by paedophiles has been operating in north London have been dismissed by a High Court judge.
Mrs Justice Pauffley said detail of the claims have been circulating on the internet.
At a family court hearing in London, she said she had been asked to investigate by social services bosses and had conducted a fact-finding exercise.
The judge said in a ruling on Thursday that the claims were "baseless" and she described people who sought to perpetuate them as "evil" or "foolish".
Mrs Justice Pauffley said the case centred on two children - aged eight and nine - whose parents were separated.
The judge said the London Borough of Barnet had begun care proceedings in relation to the youngsters.
She said that "lurid allegations of the most serious kind" were drawn to the attention of police last September.
It was suggested that the youngsters were part of a large group of children from north London who belonged to a "satanic cult", the judge added.
She said there were allegations of "significant paedophile activity" - allegations that children had been sexually abused and made to abuse one another.
Mrs Justice Pauffley said allegations were made by the two children, their mother and her partner.
"Specifically, it was said that babies were supplied from all over the world," she said. "The assertions were that babies had been abused, tortured and then sacrificed."
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