What I witnessed today in the emergency department of the Kamal Odwan hospital was the most harrowing thing I have ever seen.
"I will never forget the utter shock on these kids' faces - they thought they were safe in a UN school," Correspondent Dan Rivers said.
In between the bandages, I could see the soreness of Randa’s skin. Her eyes stare out at a world which has been brutal to her.
Foreign Secretary Philip Hammond has said Hamas must agree to a humanitarian ceasefire without conditions.
Hamas leader Khaled Meshaal said he was ready to accept a halt to the violence, but only if Israel ended its siege in Gaza.
His comments come as at least 16 people were killed in an attack on a UN school in Gaza.
The Israeli military has told ITV News that Hamas rockets may have hit a school in Beit Hanoun where over a dozen fatalities have been reported.
A UN spokesman in Gaza earlier accused Israeli defence forces of attacking the school, despite having been given the exact co-ordinates of the facility.
ITV News Senior International Correspondent John Irvine reports:
IDF tell #ITVnews Hamas rockets landed in Beit Hanoun in Gaza, possibly hitting UN school where 15 at least killed
At least 16 people have been killed after a reported Israeli attack on a UN school in the northern Gaza strip, local media reports.
The school was being used to shelter hundreds of people from the ongoing violence in the region.
ITV News witnessed children "lying in pools of blood" in the aftermath of the shelling.
Scattered books and belongings were seen scattered across courtyard within the facility.
Injured children have been seen lying in "pools of blood" after an attack at a school acting as a shelter in Gaza.
ITV News Correspondent Dan Rivers, who is at a hospital where the victims are being treated, tweeted:
Adnan Abu Hassna, the UN spokesman in Gaza told ITV News that the Israeli military attacked a school acting as a shelter at around half two this afternoon.
The Beit Hanoun elementary school had around 800 people, mostly women and children, inside when the attack took place.
Mr Hassna said the UN had provided the exact co-ordinates of the school to the Israeli military, so they are surprised by the attack.
The attack is thought to have come from a tank, or artillery. Local media are reporting 16 people have died and 10 have been injured.
ITV News, filming in the nearby Kamal Odwan hospital in Beit Hanoun, observed scores of injured children requiring treatment.
A United Nations spokesperson has confirmed that multiple people people have died following an attack an a UN school being used as a shelter in Beit Hanoun, Gaza.
Confirm multiple dead and injured at designated UNRWA shelter in Beit Hanoun RT
Precise co-ordinates of the UNRWA shelter in Beit Hanoun had been formally given to the Israeli army RT
Over the course of the day UNRWA tried 2 coodinate with the Israeli Army a window for civilians 2 leave & it was never granted RT
The shelling of a UN school by the Israeli military has killed at least 13 people, NBC's Richard Engel reports.
UN school attacked in north gaza.. 13 at least killed. Bloody desks. Blood on ground. Terrified children.
Easyjet has said it will resume flights to Tel Aviv Ben Gourion International Airport from tomorrow.
The announcement comes as the European Aviation Safety Agency said it was lifting its recommendation against flying to Tel Aviv.
ITV News Correspondent Dan Rivers has arrived in Gaza, to find the streets empty of people but filled with rubble from the buildings destroyed by Israeli airstrikes and shelling.
In the first 15 minutes I saw just 3 people on streets of Gaza but plenty evidence of this brutal war http://t.co/MeVnnE6x4o