At least six people died when a refugee boat sank off the coast of Libya.
The International Organization for Migration (IOM) announced on Saturday that 29 other people were still missing.
Her small wooden boat capsized near Sabratha on Friday.
This week alone, at least 53 occupants of refugee boats off Libya have been reported dead or missing.
Libya is an important transit country for migrants and refugees from Africa and the Middle East who want to cross the Mediterranean to Europe.
If the people are sent back to the North African crisis country, they are housed in internment camps.
Human rights activists repeatedly criticize the conditions in the centers.