At least 90 people have been killed on Sunday following an Israeli airstrike on a residential block in the Jabalia refugee camp in northern Gaza.
The attack targeted the home of the Shehab family, causing extensive damage to neighbouring houses.
Elsewhere, Israeli forces attacked several parts of the Gaza Strip, including the southern city of Khan Younis and Deir el-Balah in central Gaza, while the Latin Patriarchate of Jerusalem said a Christian mother and daughter were shot dead by an Israeli soldier "in cold blood" on the grounds of the Gaza Strip's only Catholic church.
Palestinian health officials have also called for “urgent probe” as witnesses say Israeli bulldozers crushed dozens of Palestinians alive in the yard of Kamal Adwan Hospital in northern Gaza.
Israel's bombardment of Gaza has left much of the territory in ruins, with the UN estimating 1.9 million Gazans have been displaced by the war, while over 18.800 Palestinians have been killed, including 8000 children.
The UN said this week that hunger and desperation were driving people to seize humanitarian aid being delivered to Gaza, warning of a "breakdown of civil order".
International aid organisations have struggled to get supplies to desperate Gazans.
The agency reported a "prolonged communications blackout" across Gaza that started on Thursday night and has continued into Sunday.