Assam Rifles sources said that acting on a tip-off, its troops along with Mizoram Police seized the contraband from an abandoned place at Zokhawthar in Champhai district bordering Myanmar.
In a separate joint raid, the paramilitary troopers and the Mizoram police seized a large cache of explosives and arrested one person from the Zokhawthar area on Sunday.
The seized explosives include 1,000 sticks of Neogel 90, 200 detonators, 235-metre Cordex, and 10 cartridges.