According to the news in the Greek media, the fishing boat carrying irregular migrants capsized off the coast of Navarin Castle in the Peloponnese, for an undetermined reason.
In the incident that took place in international waters, 78 people lost their lives and more than 100 were rescued.
It was noted that the rescued migrants were taken to Kalamata Port and search and rescue efforts continue.
It is not yet known how many people were on the boat, which set out to transport the irregular migrants from Libya to Italy.
Greek President Katerina Sakelaropulu will also go to Kalamata to support the rescued migrants.