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.
Police name man found dead in Bangor
Education Authority boss hits out at criticisms of public services
Man in 90s dies following Co Down road crash
Police to increase patrols after second incident of shots being fired in Belfast
Woman charged over theft of campaigner’s car ‘must stay out of Belfast’