Acting on a tip-off, a police team of South Zone Task Force intercepted a vehicle in Kanchanbag area and seized the explosives before nabbing one blasting contractor, identified only as Jangiah.
He had illegally procured the explosives for carrying out blasts near construction sites, police said, adding, besides detonators and ammonium nitrate, 50 kg of gelatin sticks were also recovered.
The contractor was being interrogated, they said.