Khalil Al-athamnah prepares a makeshift burner used to extract fuel from melted plastic in Zawaida, central Gaza strip, Thursday. (AP Photo/Abdel Kareem Hana)

DEIR AL-BALAH, Gaza (AP) — Israeli strikes in Gaza’s southern city of Khan Younis early Thursday killed five people, hospital officials said, bringing the death toll from airstrikes in the Palestinian territory over a roughly 12-hour period to 33, mostly women and children. The strikes have been some of the deadliest since Oct. 10 when a U.S.-brokered ceasefire took effect.

The renewed escalation came after Israel said that its soldiers had come under fire in Khan Younis on Wednesday. Israel said that no soldiers were killed and that the military responded with strikes.

Four Israeli airstrikes on tents sheltering displaced people in Khan Younis late Wednesday and early Thursday killed 17 people, including five women and five children, according to officials at Nasser Hospital.

In Gaza City, two airstrikes on a building killed 16 people, including seven children and three women, according to officials at the Al-Shifa hospital in the northern part of the city where the bodies were taken.

The Hamas militant group condemned the Israeli strikes as a “shocking massacre.” In a statement, Hamas denied firing toward Israeli troops.

At Nasser Hospital, scores of people gathered to offer funeral prayers for those who were killed in the Israeli strikes. Women wailed in mourning over the bodies of loved ones wrapped in white burial shrouds.

Abir Abu Moustapha lost her three children – aged 1, 11 and 12 — and her husband in a strike that hit their tent Wednesday. She squatted beside their bodies as they were prepared for burial.

“My children are gone. What can I say? And my husband, my most precious. May God have mercy on them,” Abu Moustapha said. “What was my children’s fault that they had to die? What was their fault that they died in front of my eyes?”

The Israeli military said their strikes were targeting two Hamas figures, one who was a commander in the group’s naval unit and another in charge of tunnels in parts of Khan Younis.

Hospital officials said that the bodies came from both sides of a line established in last month’s ceasefire. The boundary splits Gaza in two, with about 50% of the territory under military control.

The strikes came shortly after the U.N. Security Council gave its backing to U.S. President Donald Trump’s blueprint to secure and govern Gaza. The plan empowers an international force to provide security in Gaza, approves a transitional authority and envisions a possible future path to an independent Palestinian state.

But there are still questions over how the plan will be implemented, especially after Hamas rejected it. The militant group said that the force’s mandate. which includes disarmament, “strips it of its neutrality, and turns it into a party to the conflict in favor of the occupation.”

Israeli strikes have decreased since the ceasefire agreement took effect, though they haven’t stopped entirely.

Gaza’s Health Ministry, which doesn’t distinguish between civilians and combatants, reported more than 300 deaths since the truce began. Each side has accused the other of violating its terms, which include increasing the flow of aid into Gaza and returning hostages — dead or alive — to Israel.