A three-year-old girl suffered serious injuries when a crude bomb exploded in front of a BJP worker’s house at Indran village in North Dinajpur district on Monday afternoon.

Police said Purnima Saha was playing near Kalyan Das’s home with some children when a bomb went off. “Locals rushed her to Raiganj Government Medical College and Hospital. She is reported to be in critical condition,” said a police officer.

Villagers said they had no inkling as to who kept the bombs in front of Das’s house.

Both BJP and Trinamul leaders raised fingers at each other following the explosion.

Arindam Sarkar, a district Trinamul leader, alleged that BJP workers had stored crude bombs in their houses ahead of the Assembly polls.

Basudeb Sarkar, BJP chief of North Dinajpur, however, rejected the charges. “Trinamul supporters had planted the bombs in front Das’s house.”

The police said they were gathering information. “Some policemen have been deployed in the area,” said an officer.