A refugee boat with numerous people on board capsized off the coast of Tunisia.
About 30 people were rescued, more than 50 are missing.
The boat had left Libya for Italy, but was in distress off the coast of Tunisia.
Some refugees held on to an oil rig until they were rescued.
According to the International Organization for Migration (IMO), all survivors are from Bangladesh.
They left the Libyan city of Suwara on Sunday.
Your boat overturned off the Tunisian city of Sfax.
In Libya and Tunisia, boats with refugees who want to reach Europe keep casting off.
This route across the Mediterranean is considered to be one of the most dangerous refugee routes.
According to the (IOM), more than 8600 people arrived in Italy on this route from January to April.
According to the UN, more than 550 people have died trying to cross the Mediterranean this year.
According to the private German operator, the aid ship "Sea-Eye 4" had taken more than 400 boat migrants on board on the Mediterranean in a short time in the past few days.
tfb / AFP / dpa