An Egyptian Court on Sunday postponed the review of the Two Saints Church blast case to 5 February.
At least 24 people were killed in the blast, which took place outside the church on New Year's Eve last year.
On 23 January, former Interior Minister Habib al-Adly said a group called the Army of Islam was responsible for the attack, while the group denied responsibility.
Joseph Malak, the lawyer for the families of the victims, told Al-Masry Al-Youm on Sunday that he has asked for the inclusion of Field Marshal Hussein Tantawi as a litigant in the case to oblige the Interior Minister to submit the results of investigations carried out so far.
Malak also said that Mohamed Abdel Motalleb, Alexandria Lawyers Syndicate chief, has joined the defense team.
On 13 December, the St. Mark Church in Alexandria filed a lawsuit against the prime minister, interior minister and the attorney general, accusing them of dragging their feet on the case.
Kamil Siddeeq, secretary of the Coptic Ecclesiastical Council, said the Two Saints Church is seeking to overturn a gag order to allow the announcement of investigation results.
Meanwhile, dozens of activists surrounded the Two Saints Church on New Year's Eve on the anniversary of the attack which took place at 12:15 last year.
They lit candles in front of the church in a gesture of support that was well-received by Copts and chanted, “Muslim and Copts are one hand.”
Translated from Al-Masry Al-Youm