Seven were killed in a strike on a house in central Gaza City, Reuters added, citing Gaza officials.

Meanwhile, at least six people were killed in overnight Israeli strikes, including two children who were killed in an Israeli strike targeting the tent where their family was sheltering, AP reported on Sunday, citing medical officials and hospital records.

The strike in the Al-Mawasi area, a sprawling tent camp housing hundreds of thousands of displaced people, also wounded the children's mother and their sibling, according to the nearby Nasser Hospital. An Associated Press reporter at the hospital saw the bodies.

Despite Al-Mawasi being designated by the Israeli military as one of the only safe areas in the Gaza Strip, the beach camp has been repeatedly targeted.

In July, the UN Rights Office underscored the danger posed to displaced Palestinians sheltering in Al-Mawasi as Israel continues its airstrikes and shelling into the Israel-designated “humanitarian zone,” adding that “there is no safe place in Gaza.”

A separate strike in the southern city of Rafah, on the border with Egypt, killed four men, AP reported, citing hospital records.

On Saturday night, Israeli warplanes targeted a residential building in the Tel Al-Zaatar neighbourhood of the Jabalia refugee camp, where displaced families were sheltering. The airstrike killed at least 40 people, including women and children, Palestinian news agency WAFA reported.

Earlier on Saturday, Israel killed five people, including three World Central Kitchen (WCK) workers, in an airstrike that targeted their vehicle in Khan Younis.

"All three [Palestinian] men worked for WCK and they were hit while driving in a WCK jeep in Khan Younis," Gaza civil defence spokesman Mahmoud Bassal said, adding that the vehicle had been "marked with its logo clearly visible."

According to Reuters, the charity group said it was pausing operations in Gaza, adding that it was working with incomplete information and urgently seeking more details.

Furthermore, on Saturday, international aid agency Save the Children said one of its staffers was killed in an airstrike in Khan Younis, Reuters reported.

This is not the first time Israel has targeted aid workers.

Local aid workers are facing the same risks as the rest of the population while striving to deliver assistance amid Israel's war on Gaza, Palestine Red Crescent Society Vice President Marwan Jilani told AFP in October.

Last week, the UN said 333 aid workers had been killed since the start of the war in October 2023, 243 of whom are employees of the UN Relief and Works Agency for Palestine Refugees (UNRWA).

Israel's war on Gaza has so far killed 44,382 Palestinians and wounded more than 105,142, according to figures from the Palestinian Ministry of Health, which the United Nations considers reliable.

The war has also destroyed vast areas of the coastal territory and displaced 90 percent of the 2.3 million population, often multiple times. Hundreds of thousands have crammed into squalid tent camps, where conditions have worsened as the cold, wet winter sets in.

The United States, Qatar, and Egypt have repeatedly tried to broker a ceasefire deal in Gaza and the release of the remaining captives during the past year, but these efforts stalled as Israel rejected Hamas' demand for a complete withdrawal from the territory.

The Biden administration has said it will make another push for a deal in its final weeks in office.

US President-elect Donald Trump has vowed to end the wars in the Middle East, without saying how. He was a staunch defender of Israel and its policies toward the Palestinians during his previous term.