Bomb explodes in Kaduna; Target Army Convoy.

A bomb exploded at Dakande area along Kaduna-Zaria express road . The
bomb which exploded this evening, was targeted at an
army convoy moving from Kaduna to Zaria for official duty with some
senior army officers on board .

A security source it was a time bomb that was used this time by the bombers suspected to be Boko Haram members. He said ,” we are becoming suspicious and confused how time bombs got into this country”. But
the security source said the Kaduna Police Commissioner , Mohammed
Jinjiri Abubakar has deployed an anti bomb squad to the area to ensure
safety.

UPDATE 1:  Colonel Sani Usman of the Nigerian Army 1st Division in Kaduna told
reporters that one person was injured in the blast. He also confirmed
that the army has condoned off the area and began full investigations to
unravel the cause of the explosion.

How did Boko Haram get to know that military convoy will pass through
the route? If they have no prior knowledge it would have been just been
throwing of grenade but to set time bomb means that they knew when the
convoy will pass and the route they will follow. This needs to be
investigated.