At least 27 people died Thursday in two shipwrecks off the coast of Tunisia. One of the dead was a newborn baby. Eighty-three surviving refugees from various sub-Saharan African countries were rescued by members of the Tunisian National Guard.

Separately, at least 20 asylum seekers went missing Tuesday after their boat sank as it traveled from Libya to Italy. Authorities believe the passengers, including women and children, died in the tragedy.

The International Organization for Migration says at least 24,500 people have disappeared or died in the central Mediterranean since 2014 as they attempted to reach European shores. Most of the refugee boats set sail from Libya or Tunisia.