One more victim of the explosion at Baitus Salah Jame Mosque in Narayanganj’s Fatullah died on Tuesday.
Hannan, 50, died around 7pm undergoing treatment in the intensive care unit (ICU) of Sheikh Hasina National Institute of Burn and Plastic Surgery.
Around 85% of his body skin surface was burnt, said Dr Partha Shangkar Paul, a resident doctor at the institute.
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So far, 28 people, including a child, have died from burn injuries sustained in the blast which took place on Friday.
Eight other people are still undergoing treatment at the hospital in Dhaka.
Those currently undergoing treatment are in critical condition, said Dr Partha.