US President Donald Trump earlier announced a "final proposal" for a 60-day ceasefire in the nearly 21-month-old war between Israel and Hamas, stating he anticipated a reply from the parties in coming hours.

Hamas wrote on its official website: "The Hamas movement has completed its internal consultations as well as discussions with Palestinian factions and forces regarding the latest proposal by the mediators to halt the aggression against our people in Gaza.

"The movement has delivered its response to the brotherly mediators, which was characterized by a positive spirit. Hamas is fully prepared, with all seriousness, to immediately enter a new round of negotiations on the mechanism for implementing this framework," the statement said.

In a sign of potential challenges still facing the sides, a Palestinian official of a militant group allied with Hamas said concerns remained over humanitarian aid, passage through the Rafah crossing to Egypt and clarity over a timetable of Israeli troop withdrawals.

Trump said on Tuesday that Israel had agreed "to the necessary conditions to finalize" a 60-day ceasefire, during which efforts would be made to end the US ally's war in the Palestinian enclave.

Israeli Prime Minister Benjamin Netanyahu, who is due to meet Trump in Washington on Monday, has yet to comment on Trump's announcement, and in their public statements the two sides remain far apart. Netanyahu has repeatedly said Hamas must be disarmed, a position the militant group, which is thought to be holding 20 living hostages, has so far refused to discuss.

Israeli media cited an Israeli official as saying that Israel had received and was looking into Hamas' response to the ceasefire proposal.

An Egyptian security official told Reuters that Egypt, which along with Qatar is mediating ceasefire efforts, had seen Hamas' response and said: "It includes positive signs that an agreement is near, but there are some demands from Hamas that need to be worked on."

Trump has said he would be "very firm" with Netanyahu on the need for a speedy Gaza ceasefire, while noting that the Israeli leader wants one as well.

"We hope it's going to happen. And we're looking forward to it happening sometime next week," he told reporters earlier this week. "We want to get the hostages out."

Attacks overnight

Israeli attacks have killed at least 138 Palestinians in Gaza over the past 24 hours, local health officials said.

Health officials at the Nasser Hospital in Khan Younis, southern Gaza, said the Israeli military had carried out an airstrike on a tent encampment west of the city around 2 a.m., killing 15 Palestinians displaced by nearly two years of war.

The Israeli military said troops operating in the Khan Younis area had eliminated militants, confiscated weapons and dismantled Hamas outposts in the last 24 hours, while striking 100 targets across Gaza, including military structures, weapons storage facilities and launchers.

Later on Friday, Palestinians gathered to perform funeral prayers before burying those killed overnight.

"There should have been a ceasefire long ago before I lost my brother," said 13-year-old Mayar Al Farr as she wept. Her brother, Mahmoud, was shot dead in another incident, she said.

"He went to get aid, so he can get a bag of flour for us to eat. He got a bullet in his neck," she said.

Israel’s retaliatory war against Hamas has devastated Gaza, which the militant group has ruled for almost two decades but now only controls in parts, displacing most of the population of more than 2 million and triggering widespread hunger.

More than 57,000 Palestinians have been killed in nearly two years of fighting, most of them civilians, according to local health officials.