People in the village said three persons were critically injured in the explosions at Tsunami Colony around 7.30 pm. At least two houses were also damaged.
Tirunelveli collector M Karunakaran told HT search operations were on and arrangements have been made to light up the area.
“Tomorrow the entire village will be combed with the help of bomb squad,” the collector said.
According to a police official, firefighters and ambulances have reached the village.
The official who did not want to be named said it was long suspected that bombs were being made in the village.
The nuclear plant in Tirunelveli district, about 650km south of Chennai, became operational earlier this year. The project encountered massive protests from anti-nuclear activists.