According to sources, it was not clear that the blast happened due to a planted device as there were rumours that unidentified men hurled a hand grenade on the shop.
However, police confirmed that the bomb was planted beside the shop.
The injured were shifted to a local hospital in Karachi. The law enforcement agencies have surrounded the area in order to arrest the culprits.
It is to be mentioned here that many incidents of violence have occurred in Karachi, after unidentified miscreants have hurled grenades on the shops after shop-keepers refused to pay extortion.