ABUJA, Sept. 20 (Xinhua) -- Seven people were killed in an operation carried out in two uncompleted buildings located near the National Assembly Quarters in Apo area of Abuja early Friday, local police authorities said.
Sunday Odukoya, deputy police chief in the capital city, confirmed the death and said the operation was carried out on the buildings located in Zone E of the area.
He, however, could not confirm the killers or identity of the deceased.
"But the issue is, when a matter happens like this, we do investigation and people will tell us what happened. We will also gather more intelligence," he explained.
Residents told a Xinhua reporter that gunshots were heard at midnight and that the shooting lasted for an hour.
Umar Yusuf, a resident in the area said nine people had been taken to hospital apart from the seven dead victims.
In his account of the incident, Umar alleged that the people who did the shooting wore army uniform. Reports of Boko Haram members wearing camouflage to attack and kill innocent and unsuspecting citizens have been frequently reported in northern parts of Nigeria in recent times.
"They came and shared themselves, some lay on the floor, some went inside, some standing," he said.
Altine Daniel, spokesperson of the police in Abuja, said security agents were investigating reports of an attack by gunmen in the area.
Meanwhile, Xinhua learnt the corpses were taken away in an ambulance belonging to the Nigeria Security and Civil Defense Corps.
Nigeria has witnessed a string of attacks since 2009 when the Boko Haram sect launched its insurgency targeting churches, security facilities, schools and villages.
The sect seeks to enshrine the Islamic sharia law into the Constitution and declares war against the Western education.