Two people were killed as a transformer exploded near Islambagh Madina petrol pump at Chawkbazar in the capital on Wednesday night.
The deceased were identified as Md Maruf, 17, an employee of a shop and truck owner Hero, 40.
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Three people were also injured in the explosion.Two of them are Sarwar, 20, and Sohag, 30.
Chawkbazar Police Station Inspector Md Abdul Qayyum said the transformer exploded during heavy showers when a truck was heading towards Sowari Ghat, injuring five people.
The injured were first taken to Mitford Hospital after the blast.
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Later, three of them were taken to Sheikh Hasina National Institute of Burn and Plastic Surgery where doctors declared Maruf dead at midnight. Truck owner Hero died in the morning while undergoing treatment at a private hospital at Shyamoli.
Dr Partha Shankar Pal, a resident physician at the Sheikh Hasina National Burn Institute, said, of the two injured patens, Sarwar's condition is critical as 48% of his body was burnt.