In mourning for the 45 Coptic victims, Egyptian churches in the southern city of Minya also announced on Tuesday that they will not hold Easter celebrations on Saturday.
The attacks in the Nile Delta cities of Tanta and Alexandria followed a Cairo church bombing in December and came weeks before a planned visit by Catholic Pope Francis meant to show support for Egypt's Christian minority.
The attack was just the latest in growing persecution of Christians in Egypt where the terror group Islamic State is defying President Abdel-Fattah el-Sissi and is active in underground cells.
The committees would monitor "terrorist organizations" as well as "propose security and legal mechanisms to confront them", it said.
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". Islamic State has already declared more attacks to be on the way, which might force Coptic Christians to flee Egypt in order to escape prosecution.
The two jihadis carried out separate suicide bombings in the churches of Saint George in Tanta and Saint Mark in Alexandria while Palm Sunday services were being conducted.
Egypt's Interior Ministry said a suicide bomber tried to storm the entrance before being stopped in police. Police and military presence has been increased in the cities and around Christian Churches. The Health Ministry said six Muslims were among the dead in Alexandria.
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Because he always works for the team. "Sometimes he is unlucky in different circumstances". Southampton boss Claude Puel rued the concession of goals at crucial periods in the game.
Due to their attacks on the Egyptian army and oil pipelines the government placed Northern Sinai under a state of emergency in October 2014.
Egyptian officials denounced the violence as an attempt to sow divisions, and Francis sent his "deep condolences" to Tawadros.
The United States issued a travel warning on Wednesday, advising its nationals in Egypt to stay away from places of worship for the next two weeks and avoid crowds.
Palm Sunday, a Christian celebration for many, was marked by twin church bombings in Egypt.
The statement adds: "The president also expressed his confidence in President el-Sisi's commitment to protect Christians and all Egyptians".
Forty-four Copts were killed during the attacks, which the Islamic State group claimed credit for. Anyone who's different from them now is an infidel, whether they're Muslim or Christian.
On Sunday's political talk shows, top officials in President Trump's administration gave different assessments of Trump's goals in Syria and involving Russian Federation, following his Thursday strike on one of Syrian President Bashar al-Assad's air bases.
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