According to initial reports, the blast shattered the windows of nearby buildings and caused a power outage in the entire area.
The bomb disposal squad reached the site to collect evidence, with the police cordoning off the area and looking for clues related to the blast.
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While police ascertain the cause of the blast, Sindh Chief Minister Murad Ali Shah sought a report of the incident. Rescue services say that the injured have been shifted to Jinnah Hospital.
In August, two people were killed and four others injured after a cylinder exploded inside a warehouse in Sher Shah. Following the explosion, volunteers from different welfare organisations reached the site and shifted the victims to the Civil Hospital for medico-legal formalities and treatment.
According to doctors, two persons died on the spot due to critical injuries while the injured were admitted to the hospital.
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