The tragedy that continued on Christmas...Dozens killed, including Palestinian children

The Israeli army's continued attacks on Christmas have resulted in massive casualties in many parts of Palestine.

At least 21 people have been killed and 51 injured in the past 24 hours in Israeli attacks, Al Jazeera reported, citing an announcement from Gaza's health authorities.

At least six people are said to have been killed in an attack on homes and hospitals in the northern Jabaliya refugee camp.

In the southern city of Canunis, an Israeli drone reportedly attacked a refugee tent, injuring seven people, including three children.

At least eight people were also killed in the West Bank city of Tulkham, which is controlled by the Palestinian Authority, when a refugee camp was attacked and shelled.

The al-Qassam brigade, a Hamas militant group, said in a statement that two members were killed by Israeli forces in Tulkham.

Israeli forces earlier said they had conducted a "counter-terrorism" operation in Tulkham, killing one Palestinian and arresting 18 people wanted.

Since the Gaza war broke out in October last year, the death toll of Palestinians in Gaza has exceeded 45,000.

The U.N. claimed that more than half of the deaths were innocent women and minors.