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UN Secretary-General Ban Ki-moon has condemned an attack on a United Nations recreational facility for children in Gaza. He is calling for efforts to be stepped up, to bring the attackers to justice.
Early on Monday, a group of about 25 armed and masked men attacked and set fire to the building on the beach in Nuseirat.
It is also being used to host the Summer Games, which is being run by the UN Relief and Works Agency for Palestine Refugees.
Although the assailants are unknown, the attack is thought to be the work of Islamic extremists in the territory, who oppose the UN's presence.