At least 79 people have died and more than 100 have been rescued after their fishing vessel capsized off the coast of southern Greece.
But survivors and Greek officials say that hundreds more migrants were on board.
The government says this is one of Greece’s biggest migrant tragedies, and has declared three days of mourning.
The boat went down about 80 kilometers south-west of Pylos.
The coastguard said the boat had been spotted in international waters late on Tuesday, adding that no-one on board was wearing life jackets.
Shortly after, the boat capsized, taking only ten to fifteen minutes to sink completely. A search and rescue operation was triggered but complicated by strong winds. The boat is thought to have been going from Libya to Italy