"The man, a 29-year-old Finnish national, was stopped by police officers under schedule 7 of the Terrorism Act 2000 at approximately 2305hrs on Sunday, 10 June, as he attempted to board a connecting flight at Heathrow Airport…. He was released with no further action on Friday, 15 June," the statement said.
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15 June 2018, 09:03 GMT
This incident is the third case of detention of Finnish citizens in the United Kingdom on suspicion of preparing a terrorist act within the last two years.
In February 2016, a 19-year-old student from Somalia with a Finnish passport was detained in the United Kingdom.
In September 2017, two men with dual UK-Finnish citizenship were detained and then convicted.
