The Daesh extremist group Tuesday claimed responsibility for a suicide attack that killed 23 people during Mass two days earlier at a church adjoining Cairo's main cathedral.
The perpetrator of the attack was "a martyrdom seeker of the Islamic State," the group's Aamaq Agency media outlet says.
The bombing, in the complex that houses the seat of Pope Tawadros II, head of Egypt's Coptic Orthodox Church, was one of the worst ever on a Christian place of worship in majority Muslim Egypt.
The victims were buried on Monday after a funeral mass celebrated by Tawadros and a military ceremony headed by President Abdel-Fattah al-Sissi.
The Egyptian branch of Daesh is active mainly in the Sinai Peninsula bordering Israel and the Gaza Strip, but has also carried out major attacks on security forces in Cairo and elsewhere.
In June it claimed responsibility for the murder of a priest in Sinai.
