Al-Ahmad, who is also the head of Fatah delegation for the Cairo talks, said what was agreed upon two weeks ago under the auspices of Egypt is empowering the legitimate government to operate in accordance with its powers in accordance with the Basic Law in effect in the West Bank. It also added that the Presidential Guard of President Mahmoud Abbas will operate the border, under a reconciliation deal.
Under the emerging agreement, Hamas would hand over responsibilities of governing Gaza to the West Bank-based government of Prime Minister Rami Hamdallah.
The deal would also see both Hamas and Fatah form an interim government before elections.
The meetings in Cairo are centred around implementing the 2011 Cairo Agreement between the two political parties, in hopes of ending the 10-year political schism.
"President Abbas has instructed the government, and all of its institutions, to work hard towards the implementation of what has been agreed to in Cairo", Palestine's official Wafa news agency reported.
Egyptian chief of intelligence, Khalid Fawzi, presided over the signing as Hamas' representative, Saleh al-Arouri, and Fatah's negotiator, Azzam al-Ahmed, signed on.
Hamas and Fatah would return to Cairo in early December to assess implementation of the agreement, the official said.
An official from Abbas's Fatah movement said the Palestinian president was planning to soon travel to the Gaza Strip as part of the unity bid in what would be his first visit in at least a decade.
Fatah officials said the two sides agreed that the Palestinian Authority would take over responsibility for Gaza's border crossings no later than November 1 and that full governing responsibilities would be handed over to the Palestinian Authority by the beginning of December.
One of the key issues has been punitive measures taken by Abbas against Gaza in recent months, including reducing electricity payments that left the territory's residents with only a few hours of power a day.