WATCH: Woman 'possessed by demon' speaks

Footage has emerged online of the moment a possessed woman speaks in the voice of a demon. The terrifying video, featuring a woman named Carmela, shows a possessed patient writhing on a stretcher while her friends attempt to calm her down.

While responding to her name in a hoarse, demonic-sounding voice, Carmela speaks in Spanish while claiming that "she is going to hell". When an off-camera voice begs her to stop, Carmela responds "this girl doesn't exist now. It doesn't exist." In the same voice, Carmela declares that "my father is coming for him. He is mine. He is for me."