The explosion was traced to two men who rode on a motorcycle. The men on the bike reportedly threw an object which detonated not long after. The device exploded in a shop located on Ogbomoso road, near Ori Apata in the central area of Kaduna.
Those injured in the explosion were rushed to Rakiya Specialist Hospital in Magajin Gari.
About ten shops were affected by the explosion.
The Kaduna State Commissioner of Police Bala Nasarawa said the explosion was not a bomb blast. He stated that the explosion must have come from materials in the shop since their merchandise included gas cylinders and car batteries.
The wounded are being taken to Rakiya Specialist Hospital, near Magajin Gari.