By Nidal al-Mughrabi CAIRO (Reuters) -Israeli military strikes across Gaza killed at least 27 people on Wednesday, Palestinian medics said, as international mediators stepped up efforts to seal a ceasefire and hostage exchange deal between Israel and the Palestinian group Hamas.

At least 19 Palestinians, including eight children, were killed in Israeli air strikes in southern Gaza overnight, local health officials say. A mother and her four children were reportedly killed when a tent camp for displaced people in al-Mawasi was hit, while another a couple and their children died in the nearby city of Khan Younis.

Palestinian medics say Israeli airstrikes have killed at least five people in the Gaza Strip, including two infants and a woman. One strike hit a home in the central city of Deir al-Balah, killing two men and a woman,