Witnesses and health workers say Israeli forces opened fire near two aid distribution sites run by the Israeli-backed Gaza Humanitarian Foundation as crowds of hungry Palestinians sought food.

The family of Israeli hostage Evyatar David held by Hamas in Gaza has accused the group of deliberately starving him as part of a "propaganda campaign". "He is being starved purely to serve Hamas's propaganda," the family said on Saturday, a day after Hamas released a video showing an emaciated David in a narrow concrete tunnel.