Four persons, including three girls, were injured on Wednesday in an explosion at a Durga Temple at Nartiang in Meghalaya's Jaintia Hills district, police said.
It is one of the oldest Durga Temple of Eastern India, police said.
Superintendent of Police Mukesh Kumar Singh said, "The explosion took place late last night, leaving one son and three daughters of the priest critically injured."
The 500-year-old temple which is one of most revered temples in the region was intact, police said.
Singh said the bomb was purportedly targeted the priest's residence close to the temple.
Don Sumer, the prime suspect behind the blast has been arrested, SP added.
He is suspected to have triggered the blast out of grudge against the priest. The suspect had reportedly threatened the priest yesterday with dire consequences.
The police are investigating the explosive materials used. They have also recovered some fuse wires from the temple premises.