It is true. A mother ape was seen eating her own dead children.
The following URL shows footage of the cannibalistic behaviour
This is a very rare act only seen once before by wild Bonobos. Some researchers believe that the mothers killed the infants, but can’t prove so as they did not see the casualties.
Additionally, witnesses saw the mothers and other children eating the carcass.They were eating it as if there was no guilt or depression of killing one of their own.This may of have happened because of the growing food run-down in these usally passive animal’s homes