Four Sri Lankan nationals have been arrested at Luton Airport under suspicion of ‘being a member of a proscribed organisation’.

A 35-year-old woman, a 39-year-old man, a 35-year-old man and a 41-year-old man were arrested under section 11 of the Terrorism Act after they arrived at London Luton Airport over the weekend.

All four were arrested by counter-terrorism policing officers from Eastern Region Specialist Operation Unit (ERSOU), and the investigation is now being led by the Met's Counter Terrorism Command.

They have since been bailed to return to a south London police station in early November, pending further enquiries.