Three persons were killed while three others were injured when a crude bomb exploded at Bindarpur village in Murshidabad district on Tuesday. The explosion took place when the men were making bombs at an open ground in the village in the early hours Tuesday, a police officer said. Both the victims were in their 30’s and their identities were yet to be established, he said. The injured identified as one Azad Sheikh has been rushed to a hospital, he said. Locals alleged that the incident was related to a conflict among two factions of the Trinamool Congress.