The local police on Sunday seized huge quantities of explosives from the house of a person at Jilundi village near Bhanjanagar in Ganjam district.Police sources claimed to have seized 350 kg of gunpowder and 6,000 pieces of detonators from the house of the resident of Jilundi. The owner of the house is absconding and the police have launched a massive manhunt to arrest him, the sources added.