A deadly explosion ripped through a house in Murshidabad district on Saturday morning, killing a man and leaving residents shaken as police recovered several crude bombs from the scene and launched an investigation into the circumstances.

Police identified the deceased as Usman Biswas, who, according to officials, died on the spot when an explosive device detonated while it was being assembled in the Chetiani area under Raninagar police station limits. Officers responding to the call sealed the site and recovered multiple crude explosive devices for forensic examination.

“Our teams reached the house within minutes. The body has been sent for post-mortem and we have seized a number of crude bombs and raw materials for examination,” a senior local police official said. Investigators are treating the incident as an accidental detonation during the illegal manufacture of explosive devices, and forensic teams are working to establish how the explosives were assembled and whether others were involved.

The blast revived concerns about a pattern of similar incidents in the region, where several past cases involved the recovery of country-made explosives and raw materials from domestic premises. Police said these incidents are being examined carefully to determine if they are isolated accidents or part of a broader, organized effort.

State authorities have urged calm and warned against spreading rumours on social media. “We request residents to share only verified information. Speculation and communal accusations will hamper investigations,” the district administration said as it increased patrols in sensitive areas and stepped up checks on sellers of explosive precursors.

At this stage, no group has claimed responsibility for the incident and police have not publicly linked the blast to any organised extremist network. Investigators said they will follow all leads, including any evidence of external supply chains or contacts, and will prosecute anyone found to have been manufacturing or supplying explosives illegally.

Murshidabad and nearby districts have seen several incidents in recent years involving the manufacture or seizure of crude bombs and explosive materials, often prompting local authorities to conduct raids and public-safety operations ahead of elections and large public gatherings. Officials say sustained community cooperation and tighter regulation of explosive precursors are needed to prevent future tragedies.