U.S. President Donald Trump said on Friday it would probably be known in 24 hours whether Hamas has agreed to accept what he has called a "final proposal" for an Israel-Hamas ceasefire in Gaza.

The president also said he had spoken to Saudi Arabia about expanding the Abraham Accords, the deal on normalization of ties that his administration negotiated between Israel and some Gulf countries during his first term.

Trump said on Tuesday Israel had accepted the conditions needed to finalise a 60-day ceasefire with Hamas, during which the parties will work to end the war.

He was asked on Friday if Hamas had agreed to the latest ceasefire deal framework, and said: "We'll see what happens, we are going to know over the next 24 hours."

A source close to Hamas said on Thursday the Movement sought guarantees that the new U.S.-backed ceasefire proposal would lead to the end of Israel's war in Gaza.

Two Israeli officials said those details were still being worked out. Dozens of Palestinians were killed on Thursday in Israeli strikes, according to Gaza authorities.