Four men are being questioned by police investigating suspected right-wing extremists over suspicious activity in a County Antrim forest.
Searches were conducted in Ballymena and Coleraine on Wednesday and several items removed for further examination.
The suspects, aged 29, 30, 36 and 46, have been taken to a police station in Belfast for questioning.
PSNI Detective Inspector Andy Workman said: “Police are investigating the activities of a number of individuals who appear to have extreme right-wing views about tensions in north-eastern Europe and have been involved in suspicious activity in a forest in Co Antrim.”
He added: “These enquiries are not part of the investigation into munitions finds at Carnfunnock and Capanagh earlier this year.”
Those finds, made during a two-week search operation at the send of August and start of September, have been linked to dissident republican activity.