The Office of the United Nations High Commissioner for Human Rights has said it is "horrified" by reports of mass graves containing hundreds of bodies at two of Gaza’s largest hospitals. Palestinian civil defence teams began exhuming bodies outside the Nasser hospital complex in Khan Younis last week after Israeli troops withdrew. A total of 310 bodies have been found in the past week, Palestinian officials have said. Palestinian rescue teams and several UN observation missions also reported the discovery this month of multiple mass grave sites at al-Shifa hospital compound in Gaza City after an Israeli withdrawal. Officials in Gaza said the bodies at Nasser were people who had died during the siege. Israel’s military on Tuesday rejected allegations of mass burials at the hospital, saying it had exhumed corpses in the hope of finding hostages taken by Hamas in October UN rights chief ‘horrified’ by reports of mass graves at two Gaza hospitals