PHOTO:Boko Haram Bombers Killed by their Bomb in Kaduna.

At least four motor cycle operators and three bombers are reported to have died in an explosion yesterday afternoon in Kaduna. 

The incident happened along Ali Akilu road, between Abakpa Total/Shagalinku within the metropolis.
It is not clear where the bombers where heading to with the explosives before it went off. The operational office of the Kaduna state security task force, Operation Yaki, is located along the street directly where the bomb went off.
Update:
A witness said that the explosion occurred along 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. 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, witnesses say.
Men of the Joint Task Force, JTF, have arrived the area and have cordoned off the scene.
Spokespersons of the police and the JTF could not be reached yet for comments.
The bombers are believed to be members of the extremist Boko Haram sect.