ATHENS - At least 78 migrants died after their fishing boat sank off the Peloponnese, Greece's coastguard said Wednesday, as fears mounted that the death toll could rise much higher.
Some 100 people were rescued after the boat capsized in international waters in the Ionian Sea in an operation complicated by strong winds, the coastguard said.
A migration ministry source told AFP that according to the coastguard there could have been "hundreds" of people on the fishing boat.
"We fear there will be a very large number of missing persons," the official said.
The International Organization for Migration (IOM) acknowledged fears of a large number of missing people, noting in a tweet: "We fear more lives were lost. Initial reports suggest up to 400 people were onboard."
Greece's head of state, President Katerina Sakellaropoulou, said she would visit the port of Kalamata later Wednesday to confer with senior officials on the rescue and accommodation response.
The worst migrant tragedy in Greece was in June 2016 when at least 320 people were listed as dead or missing, according to AFP records going back to 1993.
The IOM until Wednesday had listed 48 migrants missing in the eastern Mediterranean so far this year, compared to 378 a year earlier.
Along with navy vessels, the rescue operation included an army plane and helicopter as well as six other boats that were in the area.
"Since very early Wednesday, an extensive rescue operation is underway off Pylos, after a fishing boat capsized with a large number of migrants onboard," the coastguard said.
- Passengers 'refused help' -
Greek media reported that nearly 30 people have been taken to the port's hospital, though the coastguard limited the number to just four.
The coastguard said a surveillance plane with Europe's Frontex agency had spotted the boat on Tuesday afternoon, but the passengers had "refused any help".
It added that none on board were wearing life jackets, and did not immediately disclose their nationalities.
Authorities said it appeared the migrants had departed from Libya and were heading for Italy.
The migration ministry would begin looking for accommodation for those rescued once they are processed by the coastguard to determine gender and nationality, an official said.
Television footage showed emergency tents being set up at Kalamata.
Also Wednesday, a sailing boat in distress carrying about 80 migrants off Crete was rescued by a coastguard patrol and towed to port, Greece's port police said.
Along with Italy and Spain, Greece has been one of the main landing points for tens of thousands of people seeking to reach Europe from Africa and the Middle East.
Greece is also facing an increase of crossing attempts from Turkey on southern routes near the Cyclades islands and toward the Peloponnese peninsula, hoping to avoid patrols in the northern Aegean Sea.
Rescue operations are common, but last month the Greek government came under international pressure over video footage reportedly showing the forceful expulsion of migrants who were set adrift at sea.
Greece and other EU member states on the southern and southeastern rim of the bloc say they are being unfairly tasked with managing arrivals of undocumented migrants.
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