A United Nations inquiry said Thursday it found Israel carried out a concerted policy of destroying Gaza’s health care system in the Gaza war, actions amounting to both war crimes and the crime against humanity of extermination.

“Children, in particular, have borne the brunt of these attacks, suffering both directly and indirectly from the collapse of the health system,” said Pillay, whose report will be presented to the U.N. General Assembly on Oct. 30.

Israel says that Gaza’s militants operate from the cover of built-up populated areas including private homes, schools and hospitals and that it will strike them wherever they emerge, while also trying to avoid harming civilians.

Hamas denies hiding militants, weapons and command posts among civilians.