Jack Coulson.

Jack Coulson, aged 19, of Roman Gardens, pleaded guilty to possessing a document or record for terrorist purposes at Leeds Crown Court on Monday, July 16.

The charge followed his arrest in January this year as part of an investigation by Counter Terrorism Policing North East and South Yorkshire Police.

An examination of Coulson’s mobile phone revealed he’d downloaded information on how to obtain and mix explosives and how to manufacture pipe bombs and other explosive devices.

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It uncovered a wide range of extreme right wing material and propaganda, including racist and anti-Semitic imagery.

His search history also indicated an interest in National Action, Nazism and White Jihad.

Detective Superintendent Simon Atkinson of Counter Terrorism Policing North East said: “Jack Coulson was in possession of disturbing and potentially dangerous material, which indicated an extreme right wing mind set and an interest in home-made explosives.

“He hadn’t come across this material by chance, but had actively searched for it and downloaded it. While no evidence was found to suggest Coulson was planning to act on this information, the combination of this material and his ideology is very concerning.