"Twenty-two people were injured", said Chukwu.
Some reports speak of 19 dead - 18 civilians and a soldier.
Boko Haram rebels were the chief suspects in the latest attack.
"There were a lot of people doing last minute shopping when the suicide bombers hit the market", he said. "I came to the night market to buy fish for dinner when I heard a loud bang some metres behind me ..."
Ari said 22 of the 70 injured were in a critical condition, adding: "There is no question as to who did it: Boko Haram has targeted Konduga several times".
He added that Nigeria was not actually fighting an external war but it is nearly like brothers fighting against brothers, which makes it a bit hard even for the armed forces to curtail it.
Injuries, suspensions and line-up vs Eibar
Behind the back-four, Marc-Andre ter Stegen should once again be the one to guard the Barcelona goal. With nine wins in 11, Diego Simeone's men were doing what they do best - winning ugly.
"Those injured have been evacuated and rushed to the University of Maiduguri Teaching Hospital (UMTH) for treatment", he said.
A fourth bomber also blew herself up outside the camp.
In 2016 the military retook most of the territory, which the terrorist group Boko Haram managed to capture after it launched military operations in 2009, and the government declared the Boko Haram insurgency defeated.
The attack happened one day after the army placed a bounty of N3m on Abubakar Shekau, leader of the sect.
The United States, which considers Shekau an global terrorist, has said it would offer up to $7 million for information on his whereabouts.