Detectives were today questioning a man under the Terrorism Act after he was arrested in a quiet country village.
The suspect was detained in Hawkinge, near Folkestone, Kent, at around 8.45am.
The man, who has not been named, is being questioned at a police station in the county under the Terrorism Act 2000, a Kent Police spokesman.
Inquiries were being focused on a house in Curlew Place, Hawkinge, a quiet cul-de-sac on a modern housing estate which was cordoned off by police tape as two officers stood guard.
There is no suggestion that the arrest is linked to last week's Channel Tunnel fire, and Scotland Yard said the Metropolitan Police Counter Terrorism Command was not involved in the inquiry.
Kent Police have not divulged the background to the arrest but it is not being connected to recent investigations in the north of England into an alleged threat to kill Gordon Brown.Reuse content