On Thursday, it said 14 more bodies of migrants were discovered, including six women, as well as the body of the boat's Tunisian captain.
This, after the coastguard announced on Wednesday that it had recovered 10 bodies after the shipwreck the day before off the North African coastal city of Sfax.
Faouzi Masmoudi, the spokesman for the court of Sfax which is investigating the tragedy, said the bodies had been trapped under the boat.
The spokesman for the National Guard also announced Thursday that 41 Tunisian migrants, including five women and nine children, had been "rescued" off the coast of Sousse.
Drowning accicdents off Tunisia have dramatically increased in recent weeks, leaving dozens dead and missing, amid a sharp rise in migrant boats heading towards Italy from the Tunisian coast.
Tunisia has taken over from Libya as a main departure point for people fleeing poverty and conflict in Africa and the Middle East in the hope of a better life in Europe.
Three times as many people sought to reach the European Union across the Mediterranean in the first three months of 2023 compared to last year, the EU's border agency said, as the U.N. migration arm decried the deadliest first quarter since 2017.
The Tunisian National Guard said this month that more than 14,000 migrants, mostly from sub-Saharan Africa, were intercepted or rescued in the first three months of the year while trying to cross to Europe, five times more than figures recorded in the same period last year.
On Tuesday, Italy's right-wing government announced a state of emergency on immigration, a move that will allow it to send back unwanted migrants more quickly.
