The trial of the main suspect, Adil El-Atmani, and his accomplices, is set to resume in Morocco on Thursday, after it was postponed last month to give the legal teams more time.
The men, who could face the death penalty if convicted, are accused of "premeditated murder" as well as "seriously undermining public order, laying an ambush, the possession of and making of explosives, and belonging to a banned religious group."
The bomb was the worst attack on Morocco in eight years. Although police initially blamed al-Qaida in the Islamic Maghreb for the attack, the terrorist group has denied responsibility.