Three persons were killed and five others injured in an explosion at a house in Bankra area of Howrah district on Thursday night, police said.
The explosion occurred in the house at Bankra's Kaboorpara area about 20 km from Howrah at around 11 pm in which three persons were killed and five others injured.
Senior police officers have rushed to the area, they said, adding the cause of the explosion was not yet known.
Sources said the explosion occurred when explosives stored in the house exploded. Some neighbouring houses were also damaged in the explosion, they said.