In Alexandria, another blast hit a church on Palm Sunday Celebration, causing casualties, according to state TV.
At least 25 people had been killed and dozens wounded in a bomb attack on a church north of Cairo.
Hours later, another blast in front of a church in Alexandria injured several people.
The Egyptian media said that Patriarch Theodore II of Alexandria and all Africa may have been inside the church during the attack, but it reported that he was not harmed.
No group claimed their responsibility for the bombings, but the “Islamic State” has claimed their responsibility for the attacks on the Coptic community in recent months.
On December 11, a strong blast hit the Coptic Cathedral in Cairo, killing 25 and wounding 49 people. The Islamic State claimed responsibility for the attack.
Moreover, the militant group pledged to carry out more attacks against Christians in Egypt.