Israeli military strikes killed at least 30 Palestinians across the Gaza Strip Sunday, including a senior rescue service official and a journalist, local health authorities said.

The latest deaths in the Israeli campaign resulted from separate Israeli strikes in Khan Younis in the south, Jabalia in the north and Nuseirat in the central Gaza Strip, medics said.

In Jabalia, they said local journalist Hassan Majdi Abu Warda and several family members were killed by an airstrike that hit his house earlier Sunday.

Another airstrike in Nuseirat killed Ashraf Abu Nar, a senior official in the territory's civil emergency service, and his wife in their house, medics added.

The Hamas-run Gaza government media office said that Abu Warda's death raised the number of Palestinian journalists killed in Gaza since October 2023 to 220.

Israel's military said in a statement that chief of staff Eyal Zamir visited troops in Khan Younis Sunday, telling them that "this is not an endless war".

Later Sunday, the International Committee of the Red Cross ICRC said in a statement that two of its staff - Ibrahim Eid and Ahmad Abu Hilal - had been killed in a strike on a house in Khan Younis on Saturday.

"Their killing points to the intolerable civilian death toll in Gaza. The ICRC reiterates its urgent call for a ceasefire and for the respect and protection of civilians, including medical, humanitarian relief, and civil defence personnel," the ICRC statement added.

In a separate statement, the Gaza media office said Israeli forces were in control of 77% of the Gaza Strip, either through ground forces or evacuation orders and bombardments that keep residents away from their homes.

Israel launched an air and ground war in Gaza on October 7, 2023. The conflict has killed more than 53,900 Palestinians, according to Gaza health authorities, and devastated the coastal strip.