Two police officers were injured on Monday morning as gunmen raided the Otoko Divisional Police Headquarters, in the Obowo Local Government Area of Imo State.
The Police Divisional Headquarters is located along the Owerri-Umuahia express road.
Witnesses said the attackers used superior weapons which caused confusion and tension in the area.
Most residents stayed indoors while the gun duel between the assailants and police officers lasted.
The assailants launched the attack around 3am and it lasted for a very long time. The police were able to repel them, another witness said.
Imo police command spokesperson, Micheal Abattam, has confirmed the incident without giving further details.