Hamas appears to have forced Israeli hostage Evyatar David to dig his own grave in a newly released clip Friday.

Evyatar David, a 24-year-old Israeli hostage, appears emaciated in a video released by Hamas, sparking protests in Tel Aviv. The footage shows him and fellow captive Rom Braslavsky confined in a narrow tunnel.

Avishai David, father of hostage Evyatar David, describes the latest images of his son in captivity: "He's silent, terrifyingly thin, disconnected from the world."