The United Nations agency that looks after Palestinian refugees said it had found a cache of rockets at one of its schools in the Gaza Strip and deplored those who had put them there.
United Nations Relief and Works Agency (UNRWA) spokesman Chris Gunness condemned those responsible for placing civilians in harm's way by storing the rockets at the school but he did not specifically blame any particular party.
"We condemn the group or groups who endangered civilians by placing these munitions in our school. This is yet another flagrant violation of the neutrality of our premises. We call on all the warring parties to respect the inviolability of UN property," Gunness said in a statement.
Israel has targeted a few UNRWA sites during fighting in the current 22-day-old campaign against Islamist militants in the Gaza Strip, and has in the past said the agency's property was used for hostile purposes.