UNRWA condemns subterranean opening found beneath Gaza schoolUN agency for Palestinians says hidden excavation violated law and endangered children; organization’s buildings have been used to hide terror tunnels and weaponsLuke Tress is an editor and a reporter in New York for The Times of Israel.The UN agency for Palestinians said on Wednesday that it had discovered a “man-made cavity” underneath a school in Gaza, calling the excavation a breach of law and a threat to children and staff.The United Nations Relief and Works Agency, known as UNRWA, said in a statement that it had “recently identified a man-made cavity underneath the grounds of an UNRWA school in Gaza.”“The agency protested strongly to the relevant authorities in Gaza to express outrage and condemnation of the presence of such a structure underneath one of its installations,” the statement said.The Gaza-ruling Hamas terrorist regime has dug an extensive network of tunnels under Gaza, which are used to move its forces or store weapons, including rockets and launchers.President of the UN General Assembly Csaba Kőrösi called for increased support for UNRWA at the event, saying the agency was short $600 million in funding."