How do I make an NPC shoot a part at the player?

I'm trying to make an NPC shoot a fireball at the player every one second when the NPC is chasing the player. I've managed to have the NPC shoot a fireball but it doesn't go toward the player. How do I make a fireball shoot at the player?

Function that makes the NPC chase the player:

local larm = script.Parent:FindFirstChild("Left Arm")
local rarm = script.Parent:FindFirstChild("Right Arm")


function findNearestTorso(pos)
	local list = game.Workspace:children()
	local torso = nil
	local dist = 20
	local temp = nil
	local human = nil
	local temp2 = nil
	for x = 1, #list do
		temp2 = list[x]
		if (temp2.className == "Model") and (temp2 ~= script.Parent) then
			temp = temp2:findFirstChild("Torso")
			human = temp2:findFirstChild("Humanoid")
			if (temp ~= nil) and (human ~= nil) and (human.Health > 0) then
				if (temp.Position - pos).magnitude < dist then
					torso = temp
					dist = (temp.Position - pos).magnitude
				end
			end
		end
	end
	return torso
end

Code that activates the function and that creates the fireball (located in the same script):

while true do
	wait(0.1)

	local target = findNearestTorso(script.Parent.Torso.Position)

	if target ~= nil then
		wait(1)

		script.Parent.Human:MoveTo(target.Position, target)

		---Fire ball script
		local fireball = script.Parent.Handle:clone()
		fireball.CFrame = script.Parent.Torso.CFrame
		fireball.Position = script.Parent.Torso.Position
		
		local bv = Instance.new("BodyVelocity")
		bv.MaxForce = Vector3.new(1000,1000,1000)
		bv.Velocity = Vector3.new(target.Position.x,0,0)
		bv.Parent = fireball
		
		fireball.Anchored = false
		fireball.CanCollide = false
		fireball.Transparency = 0
		fireball.Parent = game.Workspace
		game.Debris:AddItem(fireball,2)	
		
	
		
		local ten = true
			
		
		fireball.Touched:connect(function(hit)
		if not ten then return end
		ten = false
		local ehum = hit.Parent:FindFirstChild("Humanoid") or hit.Parent.Parent:FindFirstChild("Humanoid")
		if ehum  and ehum ~= script.Parent.Human then
			ehum:TakeDamage(25)
			local explosion = Instance.new("Explosion")
			explosion.BlastRadius = 0
			explosion.BlastPressure = 0
			explosion.Position = fireball.Position
			explosion.Parent = game.Workspace
			fireball:Destroy()
			
		elseif hit.Anchored == true and  hit.CanCollide == true then
			local explosion = Instance.new("Explosion")
			explosion.BlastRadius = 0.5
			explosion.BlastPressure = 0
			explosion.Position = fireball.Position
			explosion.Parent = game.Workspace

		end
				
		wait(1)
		ten= true
	end)
		
		
	end
end