Egypt's Sisi opens mega-mosque and Middle East's largest cathedral in New Capital

President Abdel Fattah al-Sisi inaugurated Egypt's largest church and mosque in the New Administrative Capital on Sunday, the eve of Coptic Christmas, in a message of tolerance in the predominantly Muslim country.

Copts, the largest Christian minority in the Middle East, were held a midnight mass in the Cathedral of the Nativity, billed by the government as the Middle East's largest church, a few hours after the inauguration.

Coptic Christians make up an estimated 10 percent of Egypt's nearly 100 million people and have long complained of discrimination under laws that favour Muslims.

They have also increasingly been targeted in recent years by Islamist militants including Islamic State, which is waging an insurgency in the north of the remote Sinai Peninsula.

Foreign dignitaries and officials including Palestinian President Mahmoud Abbas and Arab League Chief Ahmed Aboul Gheit flanked Sisi at the opening, state television showed.

Angham, a prominent local singer, sang for Muslim-Christian coexistence as a display of fireworks lit the skies over the two houses of worship.