Six other municipality officials were also injured in the attack.
Police said the insurgents attacked the office by opening fire at it, terrifying officials who rushed out of the office through the front door only to be shot at.
When the officials retreated and fled through the backdoor, the insurgents went inside the plant the bomb inside the office and another one outside the office.
The bomb inside the office killed three officials who were already by gunshots and a villager who happened to pass by was also killed.
The Nation