The United Nations has strongly condemned the Israeli occupation police raiding schools run by the UN Relief and Works Agency for Palestine Refugees (UNRWA) in the occupied East Jerusalem.UN Spokesperson Stephane Dujarric said that Secretary-General Antonio Guterres ‘strongly condemns the breach of the inviolability of United Nations premises in occupied East Jerusalem, including the UNRWA Kalandia Training Centre, and the attempt to forcibly enter three UNRWA schools and to seek their closure.”The use of tear gas and sound bombs in educational environments while students are learning is both unnecessary and unacceptable. This is a clear violation of Israel's obligations under international law, including obligations concerning the privileges and immunities of the UN and its personnel. The inviolability of United Nations premises must be respected at all times,’ he added.Occupation authorities on Tuesday stormed UNRWA-run school and forced its staff to close it after evacuating the students.