A man has been arrested at Heathrow Airport on suspicion of terror offences, according to Scotland Yard.
The 50-year-old man was arrested as he got off a plane from Cairo.
He is currently in police custody. A residential address in North London is also being searched as part of the investigation.
The Metropolitan Police said the arrest was pre-planned and is not in response to immediate danger.
The arrest is part of an ongoing investigation into allegations of terrorist activities overseas. However it is not linked to Isis or Syria.