A nine-month-old baby died and his parents sustained serious injuries in a house fire at Khodasingi Tota Street here on Monday night. Injured Santosh Sethi (25) and his wife Puspa Sethi (22) were shifted to the SCB Medical College Hospital IN Cuttack as their conditions deteriorated. The incident took place when a mosquito coil caught fire while they were sleeping, according to sources. The BN Pur police station registered an unnatural death case in this incident.