National Poet Kazi Nazrul Islam's grandson Babul Kazi succumbed to burn injuries at National Institute of Burn and Plastic Surgery on Sunday afternoon.
Babul, 59, who suffered 74 percent burns at his Banani residence on Saturday, breathed his last around 5:30 PM on Sunday while undergoing treatment at the institute.
Shaon Bin Rahman, a resident surgeon at the emergency department of the hospital, confirmed the demise.
The victim's elder sister Khilkhil Kazi earlier said Babul was burnt in an explosion when he lit a gas-lighter to smoke in the bathroom.