The crime happened this morning when the deceased Alim Sheikh and some of his friends were making crude bomb in an orchard, surrounded by a jute field.
The bomb accidentally went off, triggering a series of explosions where the explosives were stacked.
Alim was taken to Beldanga block hospital with multiple burns and declared brought dead.
The three others wounded were undergoing treatment in the same hospital, police added.
Sheikh, a resident of Kapasdanga village of Beldanga, had criminal records, police confirmed.
This was the 10th death of criminal incidents since the Panchayat election in West Bengal was announced on June 8.
(With UNI inputs)