A UK national has been arrested at Heathrow Airport on suspicion of preparing acts of terrorism.
According to Sky News:
A woman has been arrested at Heathrow Airport on suspicion of preparing terrorist acts, Scotland Yard has said.
The 27-year-old is a UK national.
She had just arrived on a flight from the Ethiopian capital of Addis Ababa when she was arrested on Friday.
Police said she had been taken to a south London police station, where she remains in custody.
No further details have been released at the present time, beyond the fact that she is currently in custody.
More to follow