A total of 68 survivors on were rescued Sunday off the coast of Sfax in southern Tunisia, while 48 bodies were recovered, according to Tunisia’s defense ministry.

A survivor said that more than 180 people were crammed onto the boat – double its capacity – when it started taking on water and sank.

So far 10 Tunisians have been identified among the victims, as well as 14 people from other African nations.

Tunisia, like other North African nations, is a gateway for migrants trying to cross the Mediterranean to Europe.

In March, 120 mainly Tunisian migrants were rescued by the navy trying to reach Italy.

A spokesman for the International Organization for Migration on Monday said the death toll from the latest disaster could more than double.

“According to updated info, the shipwreck off the Tunisian coasts may have caused over 110 deaths: 48 bodies recovered, maybe about 64 missing,” Flavio di Giacomo wrote on Twitter.

The figure confirmed by Tunisian authorities already makes the shipwreck the deadliest in the Mediterranean since February 2, when 90 people drowned off the coast of Libya, according to the IOM.

The Sfax incident came as nine Syrians including seven children drowned on Sunday when their vessel sank off the coast of Turkey as they were trying to reach Europe.

Spanish maritime rescue meanwhile said one person was reported drowned, while 240 migrants were rescued over the weekend.

More than 650 people have been recorded as dead or missing in the Mediterranean so far this year, while at least 33,270 have survived the crossing to Europe.