Six men and a 16-year-old youth have been remanded in custody on charges of possessing bomb making materials.
At Belfast Magistrates Court on Saturday all seven were charged with possessing a timer unit and other items with intent on 5 April.
It is understood the charges are linked to a police investigation into dissident republicans.
The officer in charge of the case told the court he believed he could connect each of the accused to the charges.
All seven were arrested in a house at Springfield Crescent on Wednesday.
The six men are Sean Maloney, 20, from Cavehill Road, Owen Farrell, 18, from Springfield Crescent, Joseph Connor, 23, from Charnwood Avenue, all Belfast and Ballymena men Peter Kyle, 18, from Dunclug Park, Kieran McIlwaine, 19, from Mount Street and Alan Daly, 31, from Moohan Road in Cabra near Dungannon.
The 16-year-old cannot be identified because of his age.
They were remanded in custody to appear again via videolink on 5 May.