The UN human rights chief said Israel's "means and methods of warfare" were inflicting "horrifying, unconscionable suffering".

Israeli fire killed at least 50 people on Monday, nearly half of them near an aid distribution site run by the U.S.-backed Gaza Humanitarian Foundation, the territory's Health Ministry said, as U.N. officials denounced Israeli-backed aid delivery methods.

Health officials say at least eight Palestinians were killed and dozens more were wounded in the latest shooting near Israeli- and U.S.-supported food distribution points in Gaza.