Turkey deported nine British citizens on April 14 after they were detained two weeks ago in the southeastern city of Hatay trying to cross the Syrian border and the join ISIS.
The British group - including four children and Waheed Ahmed, 21, the son of a local British politician Shakil Ahmed - were brought to southern city of Antalya for deportation from Dalaman Airport on Tuesday.
Waheed’s father, a councillor for the city of Rochdale, said that he thought his son was in Birmingham for a work placement and expressed his shock in a statement after Waheed was arrested.
“If I thought for a second that he was in danger of being radicalised, I would have reported him to the authorities,” councillor Ahmed said.
The suspected group of militants that Waheed was part of - containing three men aged 24, 22 and 21, two women aged 47 and 22, and four children aged one, three, eight and 11 - has been returned to Britain, according to British media.
European citizens, many of them British, have attempted to cross the Syrian border through Turkey and join ISIS. This has led to doubts in Turkey over the ability of the European authorities to identify possible ISIS militants before they travel to Turkey.
The Turkish government has questioned whether intelligence sharing by the West, especially UK, is sufficient, as a result of several recent attempts by Europeans to cross into Syria.
Waheed Ahmed was arrested at Birmingham Airport in the UK after being deported from Turkey.
British police reported that Waheed was arrested Tuesday and is suspected of preparing or instigating terrorism.
“In the early hours of Tuesday 14 April 2015, a 21-year-old man was arrested on suspicion of commission, preparation or instigation of acts of terrorism at Birmingham airport,” British police said.
Six hundred foreign fighters joining ISIS have been detected by the security services of several countries such as the speaker in many ISIS beheading videos known as “Jihadi John,” or Mohammed Emwazi, who is of British nationality.