The deceased was identified as Saidul Islam, 38, son of Sanawar Munshi of the village.
Sayedabad Union Parishad Member Abdul Momin said Saidul succumbed to his injuries while undergoing treatment at the burn unit of DMCH around 3:30 am.
On Sunday (February 23), six members of a family including Saidul suffered burns after a fire broke out following leakage in gas cylinder pipe in the kitchen.
Of the injured, Saidul and Mehedi Hasan, 10, were admitted to DMCH burn Unit in critical condition.
The rest injured Sanawar Munshi, 60, of village Dukhiabari, his wife Nilufer Khatun Lily, 55, Saidul Islam’s wife Nazira Khatun, 35, and her one and a half year old daughter Sumaiya Khatun, were admitted to Sirajganj 250-bed Bongomata Sheikh Fazilatunnesa Mujib General Hospital.