On January 12, Israeli Public Security Minister accused Hamas militants of hiding in Gaza's Shifa Hospital, using the rooms to "hold meetings,"[70] and donning medics' uniforms.[70] UNRWA disputes the assertions,[70] and Shifa Hospital's Director accused the Israeli minister of lying in order to advance his political career,[71] though the hospital doesn't monitor who enters or exits the building.[71] On January 13, the PBS program "Wide Angle" reported that an anonymous doctor at Shifa stated that Hamas officials were hiding underneath the hospital building,[72] "putting civilians in harm’s way".[72] On January 14, Israel Ambassador to the United Nations Gabriela Shalev filed a formal complaint to the UN Secretary General, claiming the discovery of a war room under Shifa Hospital,[73] that Hamas used patients as human shields.[73]