On Wednesday, the interior ministry revealed the identity of the suicide bomber who carried out the attack at Saint Mark's Church in Egypt'sAlexandria governorate on Sunday and killed 11 Christians and six Muslim police officers.
At least 46 people were killed and dozens injured on Sunday morning, when two blasts ripped through the two churches in Tanta and Alexandria.
Ismail told parliament that President Abdel-Fattah El-Sisi has declared the state of emergency "in accordance with his constitutional authorities and national responsibility", affirming the country's determination to exterminate terrorism.
Grand Sheikh Ahmed el-Tayeb, head of Egypt's Al-Azhar - the leading centre of learning in Sunni Islam - condemned the attack, calling it a "despicable terrorist bombing that targeted the lives of innocents".
The Tanta bomber was named as Mamdouh Amin Mohamed Baghdadi, a resident of the city of Qena, south of Cairo, who was born in 1977.
Around 44 people were killed in Egypt after explosions occurred at the Cathedral of the Coptic Pope and another Christian Church on Sunday.
In Tanta a man wearing concealed explosives passed through a security check at St. George's Church before detonating his suicide bomb near the pews at the front.
Women mourn for the victims of the blast at the Coptic Christian Saint Mark's Church in Alexandria the previous day during a funeral procession at the Monastery of Marmina in the city of Borg El-Arab, east of Alexandria on April 10, 2017.
The attacks led President Abdel-Fattah el-Sissi to declare a state of emergency, amid fears that IS militants, who have been battling security forces in the Sinai Peninsula for years, are shifting their focus to Egypt's Coptic minority, one of the oldest Christian communities in the world.
The pair arrived at the church early Sunday morning to start the Palm Sunday mass; Beshoy wore white deacon's robes and sang religious hymns.
"The attack.will only harden the determination (of the Egyptian people) to move forward on their trajectory to realise security, stability and comprehensive development", Sisi said in a statement.
According to the ministry, this terrorist cell carried out a number of terrorist attacks in the country.
A security source said agents would be dispersed ahead of Sunday's prayers and a special unit was formed to receive reports about suspicious individuals in the vicinity of churches. "Muslims and Christians are one". The ministry alleged they were plotting attacks against Christians.
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