June 7, 2016 9:10 am

This is the terrifying moment a delirious woman believed to be possessed by a demon spirit shakes violently as friends desperately try to calm her down.

The woman, named as Carmela, can be seen lurching backwards and forwards on a stretcher as her eyes roll into the back of her head.

Another person in the ambulance dressed in white and speaking in Spanish attempts to wake her by clapping and calling her name.

But she replies in a hoarse demonic voice saying: “She is going to hell.”

The woman speaks in a hoarse demonic voice in the video

As a woman off camera begs her to stop, the voice continues: “This girl doesn’t exist now. It doesn’t exist.”

Those in the ambulance are left puzzled by the bizarre sequence of events, with one asking: “Is she giving birth?”

In the same strained voice, Carmela, who is hooked up to an intravenous drip, replies: “My father is coming for him. He is mine. He is for me.”

The terrifying incident was captured in the back of an ambulance as it sped to hospital with its sirens blaring.

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This post was written by Nadia Vella