Four Tamils have been arrested at Colombo airport over the last week and are being held in a high security prison in Negombo, JDS reported on Thursday.
Two men were arrested after being deported from Turkey, while a man and a teenage woman were detained as they were about to board a flight to Qatar.
K Rajkumar (36) from Batticaloa and Gengadaran Saranya (19) from Puthukkudiyirippu were arrested on August 18. Ms Saranya was going to join her husband in Switzerland, JDS said.
Kurunathan Nirushan (26) from Kopay and Frederick Lawrence from Ragama were arrested following their deportation from Turkey on August 16.
