A 23-year-old man has been arrested in north London under the Counter Terrorism Act.
The man was held on suspicion of breaching notification requirements under the 2008 act.
He was arrested on Sunday by officers from the Metropolitan Police Counter Terrorism Command and remains in custody at a south London police station.
Scotland Yard said the arrest “is not linked in any way to the London Bridge terror attack” and that the inquiry was under way before Friday’s atrocity.
Under the Counter Terrorism Act, those convicted of certain offences must agree to notify the police of any change in details or plans to travel abroad.
