Borno is one of three states in northeastern Nigeria that have been under a state of emergency since May because of the violence . Witness : Gunmen shot at people as traders were closing market in Kawuri on Friday . Witness : Attackers first posed as traders . Police and Islamist militant group Boko Haram believed to have ordered the attack .
Witness : Gunmen shot at people as traders were closing market in Kawuri on Friday . Witness : Attackers first posed as traders . Police and Islamist militant group Boko Haram believed to have ordered the attack .