At least 69 people died, including 25 Malian nationals, after a boat headed from West Africa to Spain capsized off Morocco on December 19, Malian authorities said.
The makeshift boat was carrying around 80 people when it capsized.
Only 11 survived, the ministry of Malians abroad said in a statement on Thursday, after collecting information to reconstruct the incident.
A crisis unit has been set up to monitor the situation and will report any further updates, it added.