Fulci left the production partway through and opposing views were given for his departure, the first being an illness that left him unable to film and the second being that he was having disputes with producers. Fulci would later state that he "didn't finish making "Zombie 3", but the reason wasn't anything to do with illness [...] there were arguments and so, I finished off an hour and a quarter of the film". Fulci stated that he couldn't get the script changed, which he deemed to be "dreadful", and modified it with his daughter. Fragasso stated that Fulci simplified his screenplay and shot a seventy-minute film, which shocked producer Franco Gaudenzi. Fragasso went on to state that after the final editing of the film, it had a running time of one hour and ten minutes, but felt like a slow montage, and was cut down further to 50 minutes.