A 23-year-old man has been remanded in custody after being charged with having articles of use to terrorists.
Charges follow a number of house searches in Bushmills
Ian Alexander Kane, of Clougher Court, Bushmills, is accused of having a case containing two kilos of chemical powder which could be used in terrorist acts.
Mr Kane, who appeared at Ballymena Magistrates Court, is also accused of having a blank firing pistol.
The charges follow a number of house searches in Bushmills on Thursday. The accused made no reply to the charges.
No explosives were found during the search operation, which police said was linked to loyalist paramilitary activity.
However, officers are believed to have recovered a chemical substance they say could be used in bomb-making.
Other items, including a balaclava and combat-style clothing, were allegedly found.
Mr Kane is to appear before Coleraine Magistrates Court by video-link in three weeks time.