The attackers destroyed tents, toys, a plastic swimming pool and set much of the camp's equipment on fire on Monday.
John Ging, the head of the UN Relief and Works Agency (UNRWA) in Gaza, called it a 'cowardly act,' and vowed to rebuild the camp quickly.
'This is another example of the growing levels of extremism in Gaza, and further evidence, if that were needed, of the urgency to change the situation on the ground,' Ging said."