TEL AVIV/CAIRO, July 4 (Reuters) - At least 15 Palestinians were killed overnight in an Israeli airstrike in Gaza, according to local health officials, as U.S. President Donald Trump said he expected Hamas to respond to his "final proposal" for a ceasefire in Gaza in the next 24 hours.

President Donald Trump has ramped up expectations around a possible 60-day ceasefire in the war in Gaza after he said Thursday that a response from Hamas was expected within the next day.

Hamas has reportedly responded positively to the U.S.-arranged Gaza ceasefire proposal. Earlier this week, President Donald Trump said Israel agreed to conditions to finalize a 60-day ceasefire in Gaza.