Four people suffered burn injuries in a gas cylinder explosion in Naojor Bazar area of Gazipur on Wednesday night.

The four injured were taken to the National Institute of Burn and Plastic Surgery in Dhaka for treatment after the blast at 9pm.

Among the injured, Ahad, 19, sustained burns to 55 percent of his body and is in critical condition, said Dr Sultan Mahmud Sikder, resident surgeon (emergency) at the institute.

He said Abdullah, 18, suffered burns to 20 percent of his body, Ahad, 19, to 55 percent, Ashraful, 26, to 15 percent, and Naim, 25, to 4 percent.

Abdullah, Ahad and Ashraful have been admitted to the institute’s High Dependency Medical Unit (HDMU), he said.

Ahad’s condition is critical, while Naim has been kept under observation in the emergency department.