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.

David, 24, has been in captivity since his seizure by Hamas at a music festival in southern Israel on 7 October 2023.

"We are forced to witness our beloved son and brother, Evyatar David, deliberately and cynically starved in Hamas's tunnels in Gaza - a living skeleton, buried alive," the family statement added.

The hostage's family also urged the Israeli government and the world community to do "everything possible to save Evyatar".