The Police in Adamawa State said the blast which occurred in Yola on Thursday was caused by a grenade belonging to the military, the News Agency of Nigeria reports.
The Deputy Commissioner of Police in the state, Usman Audu, made this known while briefing newsmen in Yola on Friday.
Audu said: “On getting to point of explosion, we discovered that it was a military hand grenade that exploded.
“The military grenade was picked from dustbin by some young boys who I believe were playing with it.
“In the process, one of them pulled the trigger and it started smoking.
“They threw it away but the blast injured one of the boys slightly on his left foot.
“The two boys are right now with us.
“The blast is not Boko Haram attack as being speculated.”
Audu urged parents to caution their wards against going about picking strange objects.
He said: “I also want to appeal to the public, particularly operators of business premises, to always inspect their premises first thing in the morning.
“They should not hesitate in reporting any strange object sighted to the police.”
The DCP also confirmed the arrest of four suspected kidnappers believed to be behind recent kidnappings in the state.
“Four of them were arrested and an AK 47 recovered,” Audu said.
NAN.