Nazrul Mulla, a resident of Kanning District Dukhan, 24 Paragon in Kolkata, was critically injured when the cylinder exploded while refilling at Rampora locality of Qammerwari, a police spokesman said.
He said Mulla was rushed to SMHS hospital where he was declared 'brought dead' by the doctors.
Police has registered a case and started investigations, the spokesman said.
Mulla was working as a helper in the gas refilling shop.