While looking for the above I found this:
From PJ Archiving Document
The investigation, during more than 13 months, followed all the credible indices related to different hypotheses and, in an impartial manner, continued to analyse, correlate and synthesize them, looking for an explanation for the happenings of the night of 3 May 2007.
Assuming that the minor's disappearance was due to the acts of third parties, the PJ explored various lines of investigation, not excluding any hypothesis considered plausible or hypothetically acceptable.
From the documentation, you will observe that during the investigation various possibilities were contemplated.
As such, consider:
1. abduction, for sexual exploration or other (e.g, later adoption, child trafficking, organ trafficking), without homicide;
2. abduction, followed by homicide with (or without) hiding of the corpse;
3. accidental death, with later hiding of the corpse;
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