Fethi Bakkouche, prosecutor at the court in Medenine, said that "bodies began to appear near the coast of the island of Djerba since Friday."
"The toll reached 14 bodies," Bakkouche said, adding that they were of irregular migrants.
Most of them had come from sub-Saharan African countries, he said, and one was an Egyptian man identified by the passport he was carrying.
Tunisia as well as neighboring Libya have become key departure points for migrants, often from other countries, who risk perilous Mediterranean Sea journeys in the hopes of reaching Europe for better lives.
Some 2,498 people died or went missing while attempting to cross the central Mediterranean route in 2023, a 75-percent increase from the previous year, according to the UN's International Organization for Migration.
On Tuesday, Tunisian authorities in Sfax, southeast of the capital Tunis, said they found the bodies of 22 migrants who had also washed ashore over several days and seven other bodies off the coast of Gabes.
Some information in this report came from Reuters