Two bombs were also found from the vicinity of the Kaalchakra ground, where the Dalai Lama has been holding discourses, during a combing operation by a police team, Inspector General of Police (IGP), Patna Zone, N H Khan had said yesterday.
The NIA has dispatched a team including a superintendent of police-ranked officer and an explosives' expert to the site, the agency spokesperson said in a statement.
"It is said that the blast happened in a flask kept under a generator at a tea shop opposite the ground. The police found some wires coming out. Later, searches were conducted in the vicinity by the police and two objects suspected to be improvised explosive devices were recovered," the NIA spokesperson said.
The Tibetan spiritual leader had arrived in Bodh Gayaon January 1 and he is likely to stay there for a month.
A host of key personalities, including Bihar Governor Satya Pal Malik, Chief Minister Nitish Kumar and Hollywood actor Richard Gere, have visited Bodh Gaya recently to get the blessings of the Buddhist monk.
In 2013, the Maha Bodhi temple, situated at the place where the Buddha is said to have attained enlightenment, was rocked by a series of explosions in which five people, including two monks, were injured.