A man has been charged with the preparation of terrorist acts following his arrest at Heathrow airport, the Metropolitan police said.
Mamun Rashid, from east London, was charged on Sunday after a police investigation had concluded. He arrived back in the UK three days earlier from Turkey after the country said it had deported an Islamic State suspect to the UK.
The deportation of Rashid, 26, was part of a controversial push to repatriate the foreign Isis suspects held in Turkish jails.
The Met statement said: “A man has been charged with a terrorism offence following an investigation by the Met’s counter terrorism command.”
It said he will appear at Westminster magistrates court on Monday.