The victim, identified as Chandranath Dutta, was attacked at close range in North 24 Parganas district. He was rushed to a nearby hospital, where doctors declared him dead.
Police said unidentified assailants opened fire and fled the scene. No arrests have been made so far, and the motive behind the attack remains unclear.
Residents reported hearing multiple gunshots, causing panic in the area. Law enforcement teams secured the site and collected forensic evidence, including ballistic material.
Investigators are reviewing CCTV footage and questioning witnesses to reconstruct the sequence of events, officials said.
The killing comes amid heightened political tensions in West Bengal, where sporadic clashes have been reported following recent electoral developments.
Security has been tightened in parts of the district as the investigation continues. Authorities have urged calm while inquiries remain ongoing.