10 persons, including a couple, were killed in Port Harcourt, the Rivers State capital on Monday by unknown gunmen.
According to Channels Television, the incident took place at about 4 am at the Mgbosimiri and AGIP axis of the city.
Residents of the areas were reported to have scampered for safety while the attack lasted.
Nnamdi Omoni, the Public Relations Officer of the Rivers State Police Command, confirmed the incident, adding that the motive for the attack is not known yet.
He however said that the police is doing everything in their power to get to the root of the matter.
Port Harcourt has been a volatile city over the years despite efforts by the State Government and the Security Agencies to maintain peace and order.
Nyesom Wike, Governor of Rivers State, had in the past accused the Police as being behind most of the crimes being committed in the State.
Wike said that instead of fighting crime dispassionately, the police was still playing politics with the lives of Rivers people.