They said the animal mistook the low intensity bomb covered with some eatables as food and had tried to eat it. The resulting blast severely injured its entire mouth cavity and it died. The incident occurred yesterday.
The officials suspect the bomb had been kept there by farmers in the area to scare wild boars entering the gardens situated close to the forest.
A herd of about two dozen elephants have been prowling the vast and dense Seshachalam forest ranges here, they said.