A 22-year-old student was arrested last night at Birmingham Airport on suspicion of carrying with him a terrorist document.
Police seized the Pakistani national - who lives and studies in the UK - after he got off a flight from Dubai, in the United Arab Emirates.
A West Midlands Police spokesman said he was held on suspicion of being in possession of a document likely to be of use to a person committing or preparing an act of terrorism.
Last night he was being questioned by officers from West Midlands Police's Counter Terrorism Unit.
It's unclear whether police and customs were acting on intelligence or whether the suspect was arrested after a routine customs search.
The suspect is on a student visa studying in the UK.
A spokesman for West Midlands Police told MailOnline: 'A 22-year-old man was arrested last night at Birmingham airport on suspicion of being in possession of a document likely to be of use to a person committing a terrorist offence under section 58 of the Terrorism Act 2000.
'He was questioned by officers from the counter terrorism unit as he arrived on a flight from Dubai.
'He is a Pakistani national with a student visa, studying at a fully accredited institution.'
The spokesman added: 'The suspected document was found in his possession.'
Police would not give any further details in response to questions.