Four men have been arrested in Co.Antrim following searches into so called 'Suspicious activity'.
Detectives say a number of individuals appear to have extreme right wing views about tensions in North Eastern Europe.
A number of people have been involved in "suspicious activity" in a Country Antrim forest.
Police have stressed it's not linked to suspected Dissident Republican terror hides at Carnfunnock Country Park and Capanagh Forest earlier this year.
The men, who are aged 29, 30, 36 and 46, were detained at houses in Ballymena and Coleraine earlier today.
They've been taken to a police station in Belfast for questioning.
More than 5,000 NI children set to spend Christmas in temporary accommodation
No evidence of police collusion in 1978 La Mon bombing
Sex offender who targeted girls online across the UK jailed for 27 years
Pre-trial rulings due in Bloody Sunday prosecution of Soldier F
‘Worst-case scenario’ could delay Belfast maternity hospital by four years