According to Miguel Ampuero, of the Police Investigative Unit (Chile’s FBI), "The baby was naked. They strapped tape around her mouth to keep her from screaming. Then they placed her on a board. After calling on the spirits they threw her on the bonfire alive."
This was done with the consent of the baby's mother, and under the guidance of this religious sect's leader, Ramon Gustavo Castillo Gaete who also answers to the title of “Antares de la luz” (Antares of the Light). Gaete believes himself to be a deity.
Gaete also believed the child to be the Anti-Christ which would bring about the end of the world.
Ampuero points out that his sect wasn't just some fringe cult, "Everyone in this sect was a professional. We have someone who was a veterinarian and who worked as a flight attendant, we have a filmmaker, a draftsman. Everyone has a university degree. "