Egypt has called on Israel and the Palestinians to halt fire and resume ceasefire talks.
Violence continued unabated with Israeli air strikes in the Gaza Strip and Hamas militants firing rockets at the Jewish state.
A senior Egyptian diplomat said Palestinian president Mahmoud Abbas had informed Sisi that Hamas was prepared to come to Cairo for further talks, but Hamas has not immediately confirmed the report.
Gaza health officials said five people, including two children, were killed in an Israeli strike on a house in central Gaza.
Four more Palestinians were killed in other strikes.
The Israeli military said Gaza militants had fired more than 40 rockets at Israel and no Israeli casualties were reported.
Thirty eight people have died in a bus crash in Egypt's Sinai Peninsula today, the state news agency MENA reported.
Russian, Yemeni and Saudi Arabian citizens were among the more than 40 people injured in the crash in Egypt's Sinai Peninsula, local health ministry official Mohamed Lashin told the agency.
One of the buses was travelling from the popular tourist destination Sharm el-Sheikh and the other from a Nile Delta province when they collided shortly before dawn, security sources said.
The injured passengers were transported to two local hospitals while recovery workers continue to lift bodies from the wreckage.
Egypt is to build a new 72-km (45 mile) canal alongside the Suez Canal, the chairman of the Suez Canal Authority said.
"This giant project will be the creation of a new Suez Canal parallel to the current channel of a total length of 72 kilometres," Mohab Mamish told a conference in Ismailia, a port town on the Suez Canal.
An outbreak of illness at a Sharm el Sheikh resort is said to have left dozens of British holidaymakers on hotel-room drips.Read the full story ›
Three people have been killed in a car bomb blast in Giza, on the outskirts of Cairo, Egypt's state-run Nile Television says.
Another state news outlet, Al-Ahram, quoted a police officer who said those killed were inside the car and were likely to have been on their way to carry out a "terrorist operation".
Jailed Al Jazeera and former BBC journalist Peter Greste is to appeal against his conviction on terrorism-related charges in Egypt, his brother has said.
Egyptian authorities accuse Al Jazeera of backing the Muslim Brotherhood, which was recently ruled a terrorist organisation.
Mr Greste's sentencing sparked outrage around the world when he was jailed along with fellow journalists Mohammed Fahmy and Baher Mohammed last month.
Today Mr Greste's brother Mike told reporters in the family's hometown of Brisbane that they "have to have faith in the Egyptian system."
He added: "We have to exhaust all legal channels prior to ... taking other strategies," referring to options including appealing to President Abdel-Fattah el-Sissi for clemency.
Gunmen killed 21 Egyptian soldiers at a security checkpoint on Saturday.
Officials said a weapons storage facility was blown up by a rocket-propelled grenade during the attack in Wadi al-Gadid governorate in western Egypt.
Security officials said the attackers were smugglers but an army spokesman said the assailants were "terrorists".
Two of the gunmen were killed in the clashes.
A gang of armed smugglers have killed 15 Egyptian border guards near the frontier with Libya, security officials said.
Initial reports suggested up to 10 more guards may have been wounded in the attack.
The attack took place in Wadi al-Gadid governorate, which borders both Sudan and Libya.
Local media said three smugglers were killed in clashes with the guards, Reuters has reported.
Gunmen have killed or wounded up to 25 Egyptian border guards, Reuters has reported.
Journalists across the world have shown their support for the Al Jazeera reporters who have now been imprisoned in Egypt for 200 days.
ITN journalists, including ITV News presenter Mark Austin, wore a #FreeAJStaff gag in protest against the decision by Egyptian authorities to jail Al Jazeera reporters.