Israel and Hamas have made some progress toward agreement on a 30-day ceasefire in Gaza when Israeli hostages and Palestinian prisoners would be released, sources told Reuters, as Israel pressed ahead with its assault on southern Gaza’s main city.

Qatar, the US and Egypt have for weeks shuttled between Israel and Hamas to broker terms for a break in fighting, which would also allow in more food and medical supplies.

But the two sides remain at odds over how to permanently end the conflict in Gaza, and Hamas has refused to move forward until this is resolved, the sources said.

In their biggest operation in a month, Israeli forces pressed on with their capture of the city of Khan Younis, where hundreds of thousands of displaced Palestinians are sheltering after leaving the north.