Palestinians dig graves to bury their relatives who were killed in the Israeli bombardment of the Gaza Strip, at the Nasser hospital in Khan Younis, Monday, Jan. 22, 2024.

Video. Watch: UN urged investigate 'crimes committed' by Israel in Gaza

The United Nations has called for “a clear, transparent and credible investigation” of mass graves uncovered at two major hospitals in war-torn Gaza that were raided by Israeli troops.

The United Nations has called for “a clear, transparent and credible investigation” of mass graves uncovered at two major hospitals in war-torn Gaza that were raided by Israeli troops.