Cairo, Egypt
The Palestinian Islamic Army, which has ties to Al-Qaeda, the attack on New Year's Day in a Christian church in Alexandria, Egypt, which has left nearly two dozen people killed, Interior Minister Habib al-Adly, said on Sunday.
It was not immediately clear what evidence was or if anyone was arrested.
Egyptian authorities earlier this month published a draft of a man he believes is responsible for the attack.
"The man in the photo is unknown, and authorities are trying to confirm his identity," Colonel Mahmoud Alla Department of the Interior at the time.
Internal use of forensic technologies to recreate the light of the suspected suicide bomber.
Some Muslims attended Christmas services in solidarity with Coptic Christians after bombardment, the demonstrators marched to their support in the prestigious Egyptian university Al-Azhar.
The bombing of the Coptic church in the two holy killed 23 people - the deadliest attack against Christians in the Muslim majority in Egypt for some time, but far from alone.
Ten days later, a gunman killed a Christian man and wounded five others in a train Christians in Egypt. One victim said the gunman opened fire after shouting in Arabic, "There is no God but God."
The suspect was later identified as a member of the police.
And last week a man was convicted of involvement in an attack against another Coptic church a year ago, the Egyptian state newspaper Al Ahram reported Jan. 16.
Mohamed El-Kamouny, one of three people accused in targeted assassinations of members of the Coptic Christian sect after a Christmas mass, is the first to be convicted.
Seven people were killed - six Copts and Muslims on guard - and in January 2010 concert outside the Church in the southern city of Naga Hammadi. Copts observe Christmas Day on January 7.
A judge who sentenced El-Kamouny to be with two other paragraphs of the defendant until next month, Al Ahram reported.
About 9% of Egypt's 80 million people are Coptic Christians.
They base their theology on the teachings of the Apostle Mark, who introduced Christianity to Egypt, according to St. Takla Church of Alexandria, the capital of Coptic Christianity.
Religion shared with other Christians in the fifth century on the definition of the divinity of Jesus Christ.