About 110,000 people have fled Rafah in southern Gaza and food and fuel supplies in the area are critically low, a United Nations official said.

 All crossings into southern Gaza remain closed, cutting off supplies and preventing medical evacuations and the movement of humanitarian staff, said Georgios Petropoulos, an official for the UN’s Office for the Coordination of Humanitarian Affairs working in Rafah, the Guardian reported. Around 1.3 million Palestinians — over half Gaza’s population — had sought refuge in Rafah.

The International Committee of the Red Cross (ICRC) has warned that hundreds of thousands of people are facing “an extremely chaotic situation” as they try to flee Israel’s Rafah offensive. “The food and water and medical supplies situation is critical and if this continues, then we move towards catastrophic, or even more catastrophic, consequences from the situation that we now see,” ICRC spokesperson Jason Straziuso told Al Jazeera. He said the ICRC is “constantly asking” Israeli officials to allow access to humanitarian goods following the shutdown of the crossings.