Blasted ammunition dump of the Army at Salawa in Kosgama had not been properly maintained and supervised for a long period, a top military official said.
Mortar ammunition and other explosives had been stored in an on-ground building instead of a 100% secured underground, he said.
Heavy weapons, bombs and ammunition imported during the final phase of the war from 2008 to 2009 had been stored there.
Among them could be ones damaged during production, said the official, noting that an ammo dump should be opened and examined at least fortnightly. but this was not done in Salawa Army Camp ammunition dump.
The jelly-like packets put inside the boxes containing the ammunition and explosives to keep them cool could have their effect reduced in time, and a sudden increase in temperature could lead to an explosion, he noted.