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How it could have happened by PJ-Files interpretation
→ see summarizing intermediate PJ-Report
Report by Chief Inspector Tavares de Almeida to the Coordinator of the Criminal Investigation: “Where he concludes, after analyzing all the evidence gathered, that the child is dead and the parents were responsible for cadaver occultation, and the entire GROUP was lying since the first day of the investigation.”
See also refutation by Abduction Hypothesis