A US official said that a dispute broke out on Thursday over the details of the ceasefire agreement in Gaza, adding that two US envoys are working to resolve it, according to Reuters.

The official said that the dispute arose over the identities of a number of prisoners whose release Hamas is demanding, and said that this point is expected to be resolved soon.

President Joe Biden’s Middle East envoy Brett McGurk and President-elect Donald Trump’s envoy Steve Witkoff are working on the issue, and the official said they are in Doha with Qatari and Egyptian negotiators.

White House National Security Council spokesman John Kirby said separately: “We are aware of this issue and are working on it with the Israeli government, as well as other partners in the region. We are confident that these implementation details can be resolved and that the agreement will move forward this week.”

The agreement reached yesterday, Wednesday, is scheduled to be implemented starting Sunday.