Is the Infected One mortal?

[soli]

Hiya there,
I was just wondering, whether the Infected One with the crowbar, who appears after picking up the saw, is mortal and whether it's possible to kill him over time Well, I was picking up the saw, triggering him to appear and - because I'd like to explore the area without a crazy guy with a heavy piece of metal in his hand - I climbed on the large boxes, removed the small metal boxes from the floor and started making some noise. That curious lil buddy stormed the room and I started to throw one of the crates again and again against his head. It seemed as if it hurt but after - FYI, I did not count - approx. 100 hits he was still able to walk/talk/attack.

That's the situation my question comes from: is it possible, meaning, am I able to kill the Infected "Freeman" thingy by throwing a metal box at him ? ^^

Regards, soli