At least 30 Palestinians have been killed and over 100 injured in an Israeli military strike on a school close to the central Gazan city of Deir al-Balah, according to the ministry of health, which is controlled by Hamas.

The Khadija School is home to a Hamas command and control center, according to information released by the Israel Defense Forces (IDF) on Telegram.

The IDF said that Hamas utilized the property as a concealment area to organize and plan assaults and stockpile weapons.

Gaza’s health ministry said footage showed the victims were civilians and most of them were children. The BBC verified a video that shows children among the injured.

Gaza's civil defence service said the school was sheltering displaced people. Hamas condemned the attack in a statement on Telegram, saying "displaced, sick and wounded people, most of whom were women and children" were killed.

Verified video from the scene shows a chaotic situation, with people running around a compound covered in rubble. Men carry two bloodied children in their arms while a woman hugs another, and a group carries an injured man on a stretcher. A body lies on the ground covered in a blanket.

The IDF said that before the strike it took steps to reduce the risk to civilians "including the use of appropriate munitions, aerial surveillance and additional intelligence”.

Gaza's health ministry said 53 people had been killed and 189 injured since Saturday morning due to IDF bombing in Deir al-Balah and the southern city of Khan Younis.

The strike occurred as Israel continues its months-long military campaign in Gaza that has killed more than 39,000 Palestinians, according to Gaza's health ministry.

The war started when Hamas attacked Israel on 7 October, killing around 1,200 people and taking 251 hostage.

The Deir al-Balah strike was reported as the IDF ordered civilians on Saturday morning in southern parts of Khan Younis to evacuate to an "adjusted humanitarian area" in al-Mawasi, a region along the coast.

The IDF said it was about to “forcefully operate” after reporting “significant” rocket fire towards Israel from southern Khan Younis and “precise intelligence indicating that Hamas has embedded” infrastructure in the humanitarian area. The Israeli military warned civilians that “remaining in this area has become dangerous”.

The IDF released maps showing a further reduced humanitarian area in al-Mawasi. The military shrank the zone on Monday when it ordered the evacuation of part of the humanitarian area ahead of an operation against Palestinian fighters who had apparently regrouped there.

After the evacuation orders, Gaza's health ministry said at least 70 people were killed by Israeli strikes around Khan Younis.

Also on Saturday, in the West Bank, a 17-year-old boy was killed and nine people were injured in the Balata refugee camp in Nablus as a result of Israeli military action, the Palestinian Authority's ministry of health said.