The News Agency of Nigeria (NAN) learnt that the incident happened in the early hours of Monday, leaving two police operatives critically injured.
It was further learnt that the gunmen, numbering at least 20, torched some offices and scores of vehicles parked on the premises.
The Zonal Police Public Relations Officer, DSP Nkiru Nwode, confirmed the attack in a statement issued to newsmen in Awka.
Nwode explained that the attackers threw petrol bombs and Improvised Explosive Devices on vehicles parked within the precints of the zonal headquarters.
She stated that two officers sustained bullet wounds during the shootout and were receiving treatment in the hospital.
She stated that operatives repelled the bandits from gaining access to the armoury.
“One of the criminal elements was neutralised during the exchange of gunfire between the police and attackers, while many of the gang members escaped with gunshot wounds.
She also stated that the police were on the trail of the suspects and hoped they would be caught and made to face justice. (NAN)