Israel and Hamas have reached an agreement on the early return of the bodies of the last four hostages to be handed over in the first phase of the deal, Israel’s Channel 12 reported, citing government sources.

The same sources said there are also ongoing talks to extend the first phase by adding additional batches of hostage and prisoner releases.

Israel is demanding that the four bodies be handed over by Thursday, the day they were scheduled to be released, but is working to speed up the delivery. The first phase of the agreement, which includes an ongoing cease-fire, expires Saturday.