Dhaka, May 14 -- A boy has died of burn injuries he suffered in an explosion following a gas leak at a home in Narayanganj's Fatullah, taking the death toll from the incident to three.

Munna, 7, had been undergoing treatment at the National Burn and Plastic Surgery Institute in Dhaka and had suffered burns on 30 percent of his body.

He died around 9:40am on Thursday, said Dr Shawon Bin Rahman, assistant professor at the institute.

Munna's father and sister had also died from burn wounds suffered in the incident.

Kotha, Munna's 7-year-old sister, had died around 6:45pm on Wednesday at the same hospital. She had burns on 52 percent of her body, doctors said.

The explosion occurred in an apartment on the ground floor of a six-storey bui...