War crimes prosecutions for captured jihadists?

ISIS WATCH: ISIS May Face War-Crime Charges for Destruction of Historic Sites (Owen Jarus, Live Science). This with reference to some suspected ISIS fighters who have surrendered during the Mosul campaign:

Because international law forbids the destruction of heritage sites, those who surrendered could face charges for war crimes, experts say. The United Nations Educational, Scientific and Cultural Organization (UNESCO) lists areas as World Heritage Sites for having special cultural or physical significance.

"These destructions may amount to a war crime, and UNESCO will do everything in its power to document the damage so that these attacks do not go unpunished," said Irina Bokova, director-general of UNESCO, said in a statement released on Nov 25, after Nimrud was recaptured.

That would be all to the good, but it would not surprise me if there were worse war crimes that captured jihadists could be prosecuted for.