Israeli and Egyptian officials held talks in both countries Sunday aimed at bolstering the Cairo-brokered ceasefire that ended the latest deadly flare-up of violence between the Jewish state and Gaza's Hamas rulers.

Israeli Prime Minister Benjamin Netanyahu met Egyptian intelligence chief Abbas Kamel in Jerusalem to discuss "strengthening cooperation" between their countries, Netanyahu's office said.

Egypt's President Abdel Fattah al-Sisi tasked Kamel and his delegation, who also visited the occupied Palestinian Territories, with hammering out a permanent ceasefire deal, senior Egyptian security officials told AFP.

Israel-Egypt talks
Israel's Foreign Minister Gabi Ashkenazi, wearing a black facemask, at Tahrir Palace in Egypt's capital Cairo Photo: AFP / Mohamed Hossam

On the same day, Israel's Foreign Minister Gabi Ashkenazi made the first official visit by an Israeli top diplomat to neighbouring Egypt in 13 years, for talks with his counterpart Sameh Shoukry.

Ashkenazi tweeted that they would "discuss establishing a permanent ceasefire with Hamas, a mechanism for providing humanitarian aid and the reconstruction of Gaza with a pivotal role played by the international community".

He later called for efforts "to prevent strengthening extremist elements that threaten regional stability, and to ensure the return home of the missing persons and prisoners held by Hamas."

Palestinian militants
Members of the Ezz-Al Din Al-Qassam Brigades, the armed wing of the Palestinian Hamas movement, parade with an anti-tank weapon in Rafah in the southern Gaza Strip on May 28 Photo: AFP / SAID KHATIB

The Egyptian foreign ministry tweeted that the ministers' talks were "part of Egypt's relentless and continued efforts to revive the peace track and to build on the ceasefire in the Gaza Strip".

Hamas leader Ismail Haniyeh was also expected in Cairo for talks, senior Egyptian security officials said, without providing further details.

Egypt played a pivotal role in negotiating the May 21 ceasefire between Israel and Hamas that brought an end to 11 days of deadly fighting.

Gaza beach
Palestinians gather at the beach in Gaza City on May 28, a week after a ceasefire brought an end to 11 days of hostilities between Israel and Hamas Photo: AFP / THOMAS COEX

Israeli strikes on Gaza killed 254 Palestinians, including 66 children, health officials said.

Rockets and other fire from Gaza claimed 12 lives in Israel, including one child and an Arab-Israeli teenager, medics said.

Israel-Palestine conflict
A ball of fire erupts from a building in Gaza City's Rimal residential district on May 16 during Israeli bombardment on the Hamas-controlled enclave Photo: AFP / Bashar TALEB AFP News/Bashar TALEB

Sisi also tasked Kamel with working to help iron out political divisions between Hamas in Gaza and Fatah in the Israeli-occupied West Bank, the Egyptian officials said.

Kamel met Sunday with Palestinian president Mahmud Abbas in Ramallah, according to official Palestinian media.

They discussed the latest developments linked to the truce, as well as the reconstruction of the Gaza Strip, and Palestinian national dialogue, the Wafa news agency said

Egypt-Israel talks
A picture provided by the Palestinian Authority on May 30 shows president Mahmud Abbas, on the right, meeting with Egypt's intelligence chief Abbas Kamel in the West Bank city of Ramallah Photo: PPO / STRINGER

A bitter divide between Hamas and Fatah has long plagued Palestinian politics, but analysts say the latest escalation has served to unite the geographically fragmented Palestinian community in a way not seen in years.

Netanyahu reiterated Israel's demand "for the prompt return" of Israelis being held in the Gaza Strip, according to the statement.

Ashkenazi also said Israel was "fully committed" to repatriating Israeli prisoners held by Hamas.

Since Israel's 2014 invasion of the Gaza Strip, the Islamist group has held the bodies of Israeli soldiers Oron Shaul and Hadar Goldin, although Hamas has never confirmed their deaths.

Hamas is also believed to be holding two Israeli citizens who entered Gaza alone and whose families say they have mental health issues.

Israel is meanwhile holding more than 5,000 Palestinians in its jails.

Sisi has pledged $500 million to help reconstruction efforts in the densely populated Gaza enclave, which was pummelled by Israeli air strikes.

Hamas has pledged not to touch "a single cent" of international aid to rebuild Gaza.

Israel, which has enforced a land and maritime blockade on the enclave since 2007, accuses the group of diverting international aid to military ends.

The statement from Netanyahu's office said he and Kamel also discussed "mechanisms and processes to prevent the strengthening of Hamas and its use of the resources that will be directed to the civilian population in the future".

The latest violent flare-up was sparked by increased tensions in Jerusalem, including over Israeli security forces cracking down on Palestinians inside the Al-Aqsa mosque compound, Islam's third holiest site, which is also revered by Jews as the Temple Mount.

Shoukry emphasised the "need to consider the particular sensitivity (of) east Jerusalem, the Al-Aqsa mosque and all Christian and Muslim holy sites," the Egyptian foreign ministry said in a statement.

The UN Human Rights Council decided Thursday to create an open-ended international investigation into violations surrounding the latest Gaza violence.

It said it would also look at the "underlying root causes of recurrent tensions and instability, including systematic discrimination" in the occupied Palestinian Territories and inside Israel.

UN rights chief Michelle Bachelet voiced particular concern about the "high level of civilian fatalities and injuries" from the bombing of Gaza and warned the Israeli strikes on the enclave "may constitute war crimes".

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