Four alleged right-wingers, seemingly acting suspiciously in a County Antrim forest, remain in custody.
The men were detained at houses in Ballymena and Coleraine yesterday.
Police say the individuals appear to have extreme views about tensions in north-eastern Europe.
Social media warning ahead of inquest into death of Noah Donohoe
Former senior police officer Jon Burrows confirms UUP leadership bid
Man’s body found in Cookstown in search for missing 21-year-old
Two taken to hospital following suspected gas explosion in east Belfast
Man critically ill in hospital following road crash in Co Tyrone n