Israeli airstrikes killed at least nine Palestinians in two separate attacks in the Gaza Strip on Sunday, taking the weekend death toll to 97, Palestinian medics said, as U.S. and Arab mediators stepped up efforts to conclude a ceasefire deal.

Israeli strikes killed at least 42 people in Gaza, including children, overnight Thursday and into Friday, hospital and emergency response workers said, as health workers and Israel's military traded claims over reported evacuation orders for two hospitals in the territory's largely isolated north.

Residents and medics said at least 14 people were in the house of one family when the strike destroyed the building.

Israeli strikes killed at least 42 people in Gaza overnight and into Friday, hospital and emergency response workers said.

Israel and Hamas on Wednesday accused each other of obstructing negotiations for a ceasefire in the Gaza Strip, after Israel withdrew its negotiators from the talks the previous day. Israeli media reported on Wednesday that the refusal by the Palestinian Islamist militia Hamas to hand over a list of the names of the hostages it still holds is hindering progress in the negotiations.

Hospital staff say at least 30 people, including children, were killed in Gaza by Israeli strikes overnight and Friday morning, as air sirens sounded across Israel and stalled ceasefire talks were set