AI script gone wrong?

I am making a zombie AI but it seems that when it kills me it no longer chases anyone. Please help as I can not figure it out.

Here is the script:

torso = script.Parent.Torso
range = 50
armDmg=5
torDmg=10
target = nil

function findNearestTarget()
	plrs = game.Players:GetChildren()
	for i,plr in ipairs (plrs) do
		if plr.Character ~= nil then
			if plr.Character:findFirstChild("Humanoid") and plr.Character.Humanoid.Health>0 then
		   tor = plr.Character.Torso
			if target ~= nil then
			 if(torso.Position-tor.Position).magnitude < (torso.Position-target.Torso.Position).magnitude then
				print(plr.Name.." is in range")
				target = plr.Character
				break
			end
		elseif (torso.Position-tor.Position).magnitude <= range then
				print(plr.Name.." is in range")
				target = plr.Character
				break
		        end
		    end
	    end
    end
end
	
function hitArm(hit)
	if hit.Parent ~= nil and hit ~=nil then
	    if hit.Parent:findFirstChild("Humanoid") then
		    hit.Parent.Humanoid:TakeDamage(armDmg)
	    end
	end
end
function hitTorso (hit)
if hit.Parent ~= nil and hit ~=nil then
	    if hit.Parent:findFirstChild("Humanoid") then
		    hit.Parent.Humanoid:TakeDamage(torDmg)
	    end
	end
end


script.Parent["Left Arm"].Touched:connect(hitArm)
script.Parent["Right Arm"].Touched:connect(hitArm)
script.Parent["Torso"].Touched:connect(hitTorso)	
	
while true do
	wait (.1)
	findNearestTarget()
	if target ~= nil then
		script.Parent.Zombie:MoveTo(target.Torso.Position,target.Torso)
	end
end
	

Well this script does work and it does chase people after it has killed you, I tested it using your script, if you place another scripted humanoid then the zombie will automatically chase it, if you want the zombie to chase people as quickly as possible then increase the range the zombie can follow you (maybe 80 or 100), I noticed the distance you put was quite low. Please accept the answer if it helped, if it didn't then post a comment explaining why.