India, Nov. 23 -- The remains of Celeste Rivas Hernandez may have been "refrigerated" before being wrapped in a black bag, a source with knowledge of the investigation told Rolling Stone. The body of the 15-year-old girl was found dead in the trunk of an abandoned Tesla registered to D4vd. Investigators trying to determine her cause of death have said from the start that her remains were "severely decomposed" when found.

The investigators are "exploring" the theory that the remains were either frozen or refrigerated before the transfer, the source claimed. Outside experts have been called in to weigh in on what may have happened before a final autopsy is released.

TMZ cited sources connected to the probe as saying that Hernandez's body ...