Dozens of Palestinians have attacked a United Nations compound in Gaza City after the suspension of an aid programme for victims of last year's war.
The Palestinians were protesting against the UN's decision to halt aid because of a shortfall of funding from donor countries.
The protesters jumped over the compound's walls and smashed guard cabins and windows. They also burned tyres and threw stones at the compound gate.
The UN said it was "outraged by the assault". It added that the Islamic militant group Hamas, which rules Gaza, knew of the planned protest but did not take appropriate measures to protect the compound.
The UN Palestinian refugee agency said it needs $720 million to help 96,000 families whose homes were damaged or demolished in the war.