The youth's father and some Israeli officials said the gunmen took him off life support before carrying him away.
But families of slain Palestinian militants whose remains are in Israeli custody called for an exchange of corpses.
A diplomat source told Reuters the United Nations was mediating over the release of the teenager's body and Israeli military said it expected that would happen soon.Our Standards: The Thomson Reuters Trust Principles.Reuters, the news and media division of Thomson Reuters, is the world’s largest multimedia news provider, reaching billions of people worldwide every day.