According to a statement issued by the Acting Director of Army Public Relations, Colonel Sani Kukasheka Usman, at about 8.15 am today a tricycle, known as 'Keke NAPEP' unknowingly stepped on an improvised explosive device (IED) planted by the side of Biu -Damboa road close to a military checkpoint at the outskirts of Biu town, Borno State.The statement revealed that unfortunately, the IED exploded instantly killing four people comprising of a woman with her baby and two other male adults