Israeli warplanes bombed Al Jaoni School in Nusseirat, Saturday afternoon, where thousands of displaced Palestinians are taking refugee there.
At least 16 people were killed in this latest massacre at a UN school that was previously announced as a safe area by the Israeli military.
Some of the victims were displaced people from Khan Younis ordered to leave there by the Israeli military.
The death toll kept creeping up. First it was 11, 14, 15 and finally 16 as announced by the Gaza Ministry of Health.
The UNRWA Media Advisor Adnan Abu Hasna told Al Jazeera he estimated that the number of displaced people sheltering at the school stood at 2000 however this figure was far too low according to other experts on the ground.
Director of Logistics at Civil Defense told Al Jazeera that the number of families at the school was 1,200 with around 7000 people.
Some of those killed included 9-year-old Mayar Haidar and 6-year-old Bilal Hamida. They were killed with their grandmother at the school.
Many children have also been injured since the strikes were carried out at a time when children go out to play in the yards at the school to escape the heat of the classrooms.
As well as those that died because of Israeli strikes, the number of those injured was injured at 75.
The Government Media Office in Gaza said this is the 43rd massacre committed by the Israelis. It added that since the beginning of the genocide on Gazathe Israeli army has boombed more than 17 schools and shelter centers inside the Nuseirat refugee camp.