Muhammad Z Khan, from Wellingborough, Northamptonshire, has lost his High Court claim for damages against the police after he was arrested over a booklet titled 44 Ways to Support Jihad.
Khan asked a local printer for 50 copies of the work in December 2013. Staff were concerned by the content and alerted police, who consulted counter-terrorism officers.
Sir David Eady rejected Khan's claims for wrongful arrest, false imprisonment, defamation, assault and damage to property. He also dismissed claims for false imprisonment brought by Khan's parents.
The judge said the booklet fell within the concept of a terrorist publication as it encouraged Muslims to hate non-believers and to take part in violence and martyrdom, or at least support those who do.
Khan told police he did not subscribe to the booklet's views but was interested in them as a student and researcher. He was arrested, bailed, and later not prosecuted. The judge ruled that the arresting officer's suspicion was reasonably founded.
Sir David acknowledged that police could not conduct a minute search without causing inconvenience, but stressed the importance of investigating evidence giving rise to suspicion of terrorism offences.
