Marmina Monastery in Alexandria held a mass Monday to mark the second anniversary of the Two Saints Church bombing on New Year's Eve 2010, which killed 24 people and wounded more than 100.
Police are still investigating the incident.
The Free Copts Movement is organizing a march Tuesday to mark the anniversary. It would start from Shubra Square and end outside the Supreme Court, where protesters plan to hold a candlelight vigil and demand serious investigation into the incident.
The Egyptian Coalition of Minorities also plans to participate in the march.
Edited translation from Al-Masry Al-Youm