A Sinn Fein councillor is among five men in police custody tonight being questioned over alleged paramilitary activity in Northern Ireland.
Tony McCaul, 62, was detained when officers swooped on a number of properties in the Dungiven area of Co Londonderry.
He and three others, aged 31, 53 and 58, were arrested this morning.
Another 31-year-old man was detained in the Co Antrim area later.
They are being quizzed about shootings and threats made over the last four years.
Mr McCaul was elected earlier this year to the shadow Causeway Coast and Glens Council.
A number of house were searched in the Dungiven area as part of the operation.
Chief Inspector Una Jennings, from the Police Service of Northern Ireland's serious crime branch, said: "We are investigating various forms of paramilitary activity in the area, predominantly over the last four years.
"These include shooting incidents and threats."
The suspects are being held in the serious crime suite in Co Antrim.