Four migrants dead, 51 missing in Tunisia shipwreck

• Ship was carrying 57 migrants. 
• Two migrants rescued, four bodies recovered. 
• Most of them came from sub-Saharan African countries.

In yet another migrant boat disaster, as many as four people lost their lives while 51 others went missing in a shipwreck off Tunisia's coast, said a judicial official on Monday. 

Tunisia has become a major gateway for irregular migrants and asylum seekers who come from other parts of the continent through dangerous voyages in search of a better life. 

Survivors of the latest reported sinking, near Tunisia's Kerkennah Islands in the Mediterranean Sea, said the makeshift boat had departed over the weekend from a beach north of the coastal city of Sfax with 57 migrants on board.

As of Monday in the early afternoon, "four bodies have been recovered, two migrants have been rescued and 51 are reported missing," said Faouzi Masmoudi, spokesman for the court in Tunisia's second city Sfax.

He told AFP coastguard units were searching for more survivors.

The distance between Sfax and Italy's Lampedusa island is only about 130 kilometres (80 miles).

At least 30 migrants are missing after two unrelated sinkings near the Italian island of boats that departed last week from Sfax, according to survivor testimony.

Authorities in Tunisia found the bodies of 12 migrants that washed ashore north of Sfax between Friday and Sunday, but it wasn't immediately clear whether they were related to the shipwreck near the Kerkennah Islands, located just across from Sfax.

Masmoudi said authorities were investigating "whether there have been other shipwrecks in this area".

According to Tunisia's interior ministry, 901 bodies had been recovered this year by July 20 following maritime accidents in the Mediterranean, while 34,290 migrants had been rescued or intercepted.

Most of them came from sub-Saharan African countries, it said.

Nearly 90,000 migrants have arrived in Italy this year, according to the UN refugee agency UNHCR, with most of them having embarked from Tunisia or neighbouring Libya.

The central Mediterranean migrant crossing from North Africa to Europe is the world's deadliest with more than 20,000 fatalities since 2014, according to the International Organization for Migration.

Crossing attempts have multiplied in March and April following a incendiary speech by President Kais Saied who had alleged that "hordes" of sub-Saharan migrants were causing crime and posing a demographic threat to the mainly Arab country.

Xenophobic attacks targeting black African migrants and students have increased across the country since Saied's February remarks, and many migrants have lost jobs and housing.

Since early July, hundreds of migrants have been driven out of Sfax after a Tunisian man's death in an altercation with migrants.

During the following days, Tunisian police have taken migrants to the desert or perilous areas near the Libyan and Algerian borders, rights groups and international organisations said.

Humanitarian sources have put their number at over 2,000, with at least 25 reported deaths of migrants abandoned in the Tunisian-Libyan border area since last month.