Several countries have joined the UN in calling for an investigation into the deaths of more than 100 Palestinians during an aid delivery in Gaza.
At least 117 people were killed and more than 760 injured on Thursday as they crowded around aid lorries.
UN Secretary General António Guterres condemned the incident and said “desperate civilians” need urgent help.
Hamas accused Israel of firing at civilians, but Israel said most died in a crush after it fired warning shots.
On Thursday international criticism of Israel mounted with French President Emmanuel Macron saying civilians had been “targeted by Israeli soldiers”.
The EU’s foreign policy chief, Josep Borell, described the incident as “totally unacceptable carnage”.
Reacting to the incident, Mr Guterres wrote on social media: “I condemn Thursday’s incident in Gaza in which more than 100 people were reportedly killed or injured while seeking life-saving aid.”
“The desperate civilians in Gaza need urgent help, including those in the north where the UN has not been able to deliver aid in more than a week.”
On Friday France, Italy and Germany also called for an independent investigation into the aid convoy deaths.
Gaza’s Hamas-run health ministry called the incident a “massacre”.
The UN Security Council scheduled a closed-door emergency meeting to discuss the incident, during which Algeria – the Arab representative of the body – put forward a draft statement blaming Israeli forces for “opening fire”.
While 14 of the Council’s 15 members supported the motion, the US blocked it, according to AP news agency, citing the Palestinian UN ambassador Riyad Mansour who spoke to reporters afterwards. US envoy Robert Wood said the facts of the incident remained unclear.
Thursday’s incident took place shortly after 04:45 (02:45 GMT) at the Nabulsi roundabout, on the south-western edge of Gaza City.