Eastern Province Police Commissioner Alex Chilufya and Police Spokesperson Esther Mwaata Katongo confirmed in a separate interview yesterday.
Mr Chilufya said that police Criminal Investigative Department (CID) in Lusaka was still carrying out investigations on the matter.
He said his office would be informed once investigations were concluded because the law must be applied equally with no discrimination.
Mr Chilufya said the condition of Detective Sergeant Martine Kapolyo, who was also shot and was still admitted to Levy Mwanawasa Hospital in a stable condition.
He said the other officer, Detective Chief Inspector Jovas Chilumbu who was shot on the neck and sustained bruises was observed and was out of the hospital.
Inspector Mukoka from Lusaka shot at the three police officers from Chipata at a check point on Great East Road, a few meters from Airport roundabout.
The police officer was alleged to have mistaken his fellow officers for armed criminals he had been informed about.