The incident took place at Nachi community in Oji River Local Government Area on Wednesday morning.
It was gathered that three other policemen were injured during the attack as the gunmen swooped on them in surprise and overpowered them.
The gunmen, on getting to the scene were said to have opened fire on the policemen immediately as they were shooting sporadically.
Daniel Ndukwe, Police Public Relations Officer, Enugu Police Command, confirmed the attack.
Ndukwe said the command has begun investigation that would lead to fishing out of the assailants.