Israeli military strikes across Gaza killed at least 22 people on Wednesday, Palestinian medics said, as the U.S. stepped up efforts to overcome sticking points between Israel and Hamas to reach a ceasefire to end the war.

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.

The Israeli military said it targeted militants who had taken part in the Oct. 7, 2023, attack that sparked the war, without providing evidence.