Paul Koffi Koffi said Tuesday authorities will work with U.N. peacekeepers to safely store the weapons. He says they were bought by ex-leader Laurent Gbagbo.
An army spokesman says caches including 20 to 30 tons of weapons and 78 aerial bombs were found in recent weeks.
Spokesman Lt. Jean-Marc Tago says the army will keep the useable ordnance and destroy the rest.
Gbagbo’s refusal to cede power after losing a November poll plunged the country into months of violence that killed thousands. He was arrested in April by forces loyal to President Alassane Ouattara.