Heathrow arrest: The man was detained on his return to the UK
Jeremy Selwyn
Tom Powell4 May 2017
The 30-year-old was detained by the Metropolitan Police's counter-terror squad as he stepped off the plane, from Istanbul to Heathrow, on Thursday evening.
A Scotland Yard spokesman said the man had been arrested on suspicion of preparing for terrorist acts and terrorist training.
The suspect remains in custody at a south London police station.
Officers also search a property in the east of the capital.