The UN's food agency on Tuesday said that its aid convoy had been turned away by Israeli forces at a checkpoint to northern Gaza, after which it was looted by "desperate people".
The World Food Programme said the 14-truck food convoy waited at the Wadi Gaza checkpoint, inside southeast Gaza, for three hours before being turned away by the Israeli army.
Meanwhile, Palestinian group Hamas said on Wednesday it would continue working towards achieving a ceasefire in Gaza with Israel despite the absence of Israeli negotiators from the latest round of talks in Cairo.
"We are showing the required flexibility in order to reach a comprehensive cessation of aggression against our people, but the occupation is still evading the entitlements of this agreement," Hamas said in a statement.
Negotiators from Hamas, Qatar and Egypt - but not Israel - are in Cairo trying to secure a 40-day ceasefire in the war between Israel and the group in time for the Muslim fasting month of Ramadan, which begins early next week.