Emergency services spokesman Ashraf al-Qudra said an air strike on a house in the central Gaza town of Deir al-Balah killed a woman of 26 and another aged 23 who was pregnant, as Israel pressed on with its US-backed terror campaign in Gaza, now in its 18th day.

Surgeons saved the life of the 23-year-old woman's unborn child after the air strike hit a house in the central Gaza town of Deir al-Balah, emergency services spokesman Qudra said.

Another strike killed a media worker, Salah Hasanein, and his 12- and 15-year-old sons in the southern city of Rafah, Qudra said.

Two other people wounded earlier in shelling of the southern city of Khan Younis, died of their injuries, Qudra said, bringing the total number of Palestinians killed in the Israeli assault to 828.

He said nearly 100 Palestinians were killed on Thursday, one of the bloodiest days of the conflict.

An Israeli troop was also killed in Gaza on Friday, taking their losses to 33, a statement said.

The army named the dead occupation soldier as reservist Yair Ashkenazy, 36, adding that he "was killed earlier today during operational activity in the northern Gaza Strip."

NGOs put the Palestinian civilian toll at around 80 percent of total casualties, including a large number of women and children.

SHI/SHI