A bomb went off this afternoon in Kaduna killing four persons.
The explosion occurred at the busy Ali Akilu road in the city centre.
The explosive device, a security source said, exploded accidentally in the hands of two men, who were travelling with it on two motorcycles.
The men are believed to be members of the extremist Boko Haram sect.
A loud bang rang out after the explosive went off, shaking buildings around the area.
Several people around the explosion were also affected by the blast, and the casualty figure from the incident may rise, our sources say.
More details later