Egypt on Thursday celebrated the army’s 2013 overthrow of an Islamist president with a new national holiday, marked by warplanes flying over the capital of Cairo and a brief address to the nation by President Abdel-Fattah el-Sissi.

Supporters of el-Sissi, who as defense minister led the ouster of Mohammed Morsi, planned to hold rallies later in the day to mark the occasion.

But the holiday mood was ruptured by reports from Egypt’s restive Sinai Peninsula, where suspected Islamic militants on Thursday gunned down a Christian priest and two members of the country’s security forces in separate attacks, according to security and medical officials.

Back in 2013, millions of Egyptians took to the streets on June 30, to call for Morsi to step down, just a year after he took office as Egypt’s first freely elected president.

El-Sissi announced his ouster on July 3, 2013, and authorities later detained thousands of Morsi supporters and banned his Muslim Brotherhood as a terrorist group. Morsi, who has since been in custody, has been sentenced to death in one trial and long prison terms in several others. Convicted on a range of charges, including a prison break, leaking secret documents and conspiring with foreign terror groups against Egypt, he is appealing his convictions.

The holiday, which the government refers to as the “June 30 Revolution” and which it announced earlier this week, will be also marked with musical performances and free entry to museums.

In the ancient southern city of Luxor, hot-air balloons carrying Egyptian flags flew over pharaonic temples and authorities plan a parade along the River Nile.

“On this glorious day, I would like to assure you that we are working hard to realize the hopes of the Egyptian people for the better future they deserve,” el-Sissi, elected to office two years ago, said in a pre-recorded address to the nation broadcast on Thursday.

“The June 30 revolution reasserts the impossibility of imposing a status quo on the Egyptian people. Anyone who imagines that he can successfully do that is deluding himself,” he said, alluding to Morsi’s Muslim Brotherhood supporters.

On Wednesday, he appealed to security forces and agencies to stop anyone from “spoiling” the occasion. He did not elaborate, but he appeared to be referring to possible protests by Morsi supporters or attacks by Islamic militants.

Egyptian security forces have been battling militants for years in Sinai, but attacks have grown deadlier and more frequent after Morsi’s ouster.

In Thursday’s attacks, the priest was gunned down while walking in the city of el-Arish. Outside the city’s main hospital, a bomb blast killed one policeman and wounded two.

And in a Sinai village near the border town of Rafah, a bomb blast badly wounded a soldier. The soldier was wounded again when an ambulance taking him to el-Arish, escorted by an armored vehicle, was ambushed by militants.

That ambush killed another soldier, the security officials said, speaking on condition of anonymity because they were not authorized to talk to reporters.

(AP)