Report says the gunmen attacked the area, opening fire on a shop owned by an Igbo man. The Igbo business owner and two other persons were killed in the attack.
The corpses were taken to some hospitals in Kaduna town. The injured were also taken away for treatment.
Another source said the incident frightened residents, as many of them escaped to their homes and others fled the area for fear of the unknown.
Soldiers and some policemen are also said to be raiding some locations as they look for the suspects.