Zadran said the explosion was caused by a hand grenade being thrown and added that further details would be provided later.
Meanwhile, TOLOnews, citing a security source, reported that 52 people were injured following an explosion involving unexploded explosive material in Dasht-e Barchi.
According to the source, the number of injured could increase.
The victims were initially taken to local hospitals, while some were later transferred to the Emergency Hospital.
Some of the injured are reportedly in critical condition.
The exact nature of the explosion has not yet been determined, and no individual or group has claimed responsibility for the incident.