An Infected Police Officer is a type of Zombie. He is one of the strongest zombies in the game and usually only spawns in City biomes, but will rarely spawn outside of cities to attack a player's base, as of Alpha 2.
The Infected Police Officer's appearance is completely deformed and is the only zombie that can "puke" radioactive acid, probably because of a mutation that has developed in his body because of the nuclear war. The acid is a ranged splash attack and will damage several blocks at once. This attack can also damage players, so watch out if you hear this zombie starting to make puking sounds!
When the Infected Police Officer is low on health, he will run at full speed towards the player, even in daylight, and attempt to explode near the player. This explosion will almost always kill players, so if you see this zombie running towards you, take him down FAST. It is possible for this explosion to even destroy your dropped backpack if you die next to its explosion, completely removing all chances of recovering your dropped items!
While undetected, a headshot while crouched from a Crossbow will kill him instantly and silently. This zombie will try to take you down with his puke constantly once he's spotted you, so it's recommended to stay away from him and try to find cover if he's already making puking sounds. Melee attack aren't recommenden since this zombie will attempt to explode when close to the player after taking enough damage.
When encountered in large groups of zombies, it is important to always take down Infected Police Officers first, to minimize the damage they can do to structures and players even from a range.
Below is a list of the shots needed for each weapon to kill an infected police officer completely (without explotion). (Please note that these results have been researched with Fine-quality weapons)
The Flaming Arrows will tested according to how many are needed to kill the zombie with burn time included.
In order to achieve this it's required to be fast and precise with each shot or he will explode in some cases like the bow.