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.
O’Neill and Little-Pengelly urged to act on alcohol price limits as deaths rise
£14,000 pay increase recommended for Northern Ireland Assembly members
Police receive more than 100 referrals in Presbyterian Church safeguarding case
Bus driver dies at scene of crash involving school children
Jury sworn in at Natalie McNally murder trial