Nearly 50 Palestinians lost their lives in overnight Israeli airstrike against the central Gaza Strip on Thursday night that continued into Friday.

The Palestinian news agency WAFA reported Friday that the attacks occurred in the city of Deir Al-Balah, the Nuseirat camp and the town of Al-Zawayda. 

Most of the victims were killed in the bombing of several houses in the Nuseirat area. The same houses were hit a second time as people rushed to rescue those who survived the first strike, resulting in more casualties.

According to WAFA, at least 10 Palestinians, including children, were also killed and others injured in another Israeli attack on a school-turned-shelter in the Nuseirat refugee camp. 

Israel also attacked Kamal Adwan Hospital on Thursday. It is one of the last functioning medical facilities in northern Gaza.

The Health Ministry in Gaza said a floor containing the remaining medicines and medical supplies were targeted in the hospital. 

Hossam Abu Safiya, the director of the hospital, told The Washington Post that the attack put the dialysis department out of service.

The World Health Organization (WHO) condemned the attack.  

WHO chief Tedros Adhanom Ghebreyesus said the attack “caused injuries to some hospital staff members, and hit a storage space containing lifesaving WHO supplies brought in via complex missions, as well as the desalination station and water tanks on top of the hospital”.