|Probe: An investigator collects samples of dirt at a farm used by the sect|
The baby was burnt to death in a ritual bonfire by members of a cult who believed the end of the world was imminent.
Her mother, 25-year-old Natalia Guerra, had allegedly approved the sacrifice and was among those arrested. A Chilean police spokesman said: “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,” he added.
The baby was taken to a hill in the town of Colliguay, near, Valparaiso, on November 21 by the insane cult, led by 36-year-old Ramon Gustavo Castillo Gaete.
The group, which is believed to have 12 members, was formed in 2005 and includes a number of highly-educated followers.
Police said ringleader Castillo Gaete who is still on the run was last seen travelling to neighbouring Peru to buy ayahuasca - a mind-bending hallucinogenic plant he used to control members.
The spokesman added: “Everyone in this sect was a professional.
“We have someone who was a veterinarian and who worked as a flight attendant, we have a film-maker, a draftsman. Everyone has a university degree."