POLICE have searched a property in the Blackhall area of Edinburgh following an arrest as part of an investigation into the New IRA.
A man was detained at London's Heathrow Airport using anti-terrorism powers, police said.
The arrest of the 62-year-old man, who lives in Scotland, means a total of 10 people have been apprehended during the police's operation against the dissident republican organisation.
Two were charged and appeared in court on Saturday morning.
Police Service of Northern Ireland (PSNI) assistant chief constable Barbara Gray said: "Detectives from the PSNI's Terrorism Investigation Unit have today arrested a 62-year-old man at Heathrow Airport under the Terrorism Act in connection with an ongoing investigation into the activities of the New IRA.
"The man, who resides in Scotland and was arrested as part of Operation Arbacia, has been brought to Northern Ireland and is currently in Musgrave serious crime suite where he is being questioned."
There are now a total of 10 people arrested as part of Operation Arbacia.
Two of them have been charged and appeared in court this morning.
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