A police presence remains at Conway Road, with units from both Bedfordshire and the Metropolitan Police.
A Met spokesman said: “Officers from the Metropolitan Police Counter Terrorism Command have arrested two people, a man and a woman, both aged 35, on suspicion of the preparation of terrorists act contrary to section 5 of Terrorism Act 2006.
“The pair were arrested after being stopped at Luton Airport on Wednesday, 26 October.
“The man remains in custody; the woman has been bailed pending further enquiries.
Fire destroys huge area of land at Great Denham Golf Course
Anglian Water rules out hosepipe ban for Bedford households
'Sophisticated crime group' behind £1.1m stolen from Luton council that was destined for a Bedford school
Man charged with burglary and assaulting an emergency worker in Flitwick
Appeal following fatal collision on M1 at Milton Keynes
“The arrests are related to suspected travel to Syria.”
More on this story to follow.