Israeli forces have killed at least 45 people in two separate attacks on residential buildings in Beit Lahiya, in northern Gaza.
Dozens more were wounded and Gaza's health ministry is calling one of the strikes a “horrific massacre.”
And at least 40 people have either been killed or injured in an attack on Gaza City.
Emergency workers and volunteers came to the scene of the attack on Saturday, after the Israeli military bombed a residential building.
Al Jazeera’s Ibrahim Al Khalili went to the scene in Sheikh Radwan.
Palestinians in northern Gaza are struggling to survive with little or no food and water.
The Israeli army has been preventing the entry of humanitarian supplies for the past three weeks.
The UN says it has blocked nearly half of all aid missions into the north, since the beginning of the month.
It has accused the military of carrying out a systematic starvation campaign against Palestinians.
Rosalia Bollen is from UNICEF, and is based in Gaza.
She says the humanitarian crisis there has worsened, with extreme shortages of water, food and medical supplies.
Al Jazeera’s Hani Mahmoud has the latest developments from Deir el-Balah in central Gaza, Palestine.
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