The official Kuwait News Agency cited a statement from prosecutor Dherar al-Asousi saying that the accused include 25 Kuwaitis and one Iranian. All but three of the suspects are in custody.
Kuwaiti security forces last month uncovered a large cache of arms, ammunition and explosives hidden deep underground at a farm, and arrested three Kuwaitis during the raid.
The public prosecution issued a gag order on information related to the incident after local newspapers linked the cell to Iran's Revolutionary Guard and Lebanon's Shiite Hezbollah group.