In the letter, which was co-written with Technology Secretary Peter Kyle, Cooper said that, while possession of the document was illegal under existing anti-terror laws, Rudakubana had been "able to easily obtain access" to it and that it "continues to remain available online".

The Southport killer had packages sent to a neighbour’s home that contained the ingredients to make ricin, it has been reported.

A former neighbour of Axel Rudakubana has reportedly claimed that the killer was ordering packages to be delivered to other houses. She believes he was “clearly ordering” ingredients used to make poison ricin,