Further information will be announced at a noon news conference (10GMT) in Cairo, where unity talks between the rival factions began on Tuesday.
Fatah and Hamas have signed a deal today aimed at bringing the two Palestinian organisations together. Such a move would restore a great deal of Palestinian Authority President Mahmoud Abbas' influence in Gaza while weakening Hamas' control.
The sides also agreed on handing over the Rafah crossing on the border between Egypt and Gaza to the presidential guard, controlled by the Palestinian administration in the West Bank.
Hamas's capture of Gaza in 2007 ended an earlier - if short-lived - unity government established after Hamas swept 2006 Palestinian legislative polls.
Israel viewed the Palestinian accord warily, saying it must abide by previous worldwide agreements and terms set out by the Quartet of Middle East peace mediators - including the recognition of Israel and the disarming of Hamas.
It has fought three wars with Israel since 2008 and the blockaded Gaza Strip has seen deteriorating humanitarian conditions.
Richardson Police Department searching for missing 3-year-old girl
Sherin Mathews is described as standing 3 " 0′ tall, weighing 22 pounds with black hair and brown eyes. As indicated by a Facebook post , she was most recently seen by her dad outside the family's terrace.
Struggling with the fallout from the border blockade, Hamas has found it increasingly hard to govern or provide basic services, such as electricity.
Attempts at reconciliation in recent years fell apart.
The crossing has remained largely closed in recent years.
One of the key sticking points will be the fate of Hamas's 25,000-strong military wing, the Ezzedine al-Qassam Brigades.
Al-Ahmed highly appreciated the Egyptian role and keenness to achieve Palestinian reconciliation, stressing that Egypt is the sponsor of the Arab national security, including the Palestinian security.
Reconciliation could also pose a dilemma for worldwide efforts to reach an Israeli-Palestinian peace deal since Hamas has not recognised Israel, unlike the Abbas-led Palestine Liberation Organisation.