Gaza City, July 23 (RHC)-- Israeli forces have attacked a UN school sheltering displaced Palestinians against the Israeli offensive in the besieged Gaza Strip.

On Tuesday, Israel's tanks shelled the school belonging to the United Nations Relief and Works Agency for Palestine Refugees (UNRWA) in al-Maghazi, located in central Gaza, an official said on condition of anonymity. The school had also reportedly come under fire on Monday.

The official said: "Yesterday we got reports that it was shelled and so today we sent our guys down to investigate and see which side the fire came from." The anonymous UN official added: "They went down there with Israeli clearance, and while they were there, they came under Israeli shelling." The UNRWA official said there were holes blown through the walls of the school while its gates were blown off.

UNRWA, which is sheltering more than 100,000 people at more than 60 of its schools in Gaza, submitted a formal letter regarding the attack to the Israeli regime after evacuating the school.