"A total of 813 migrants, including 473 from sub-Saharan Africa" were caught off the North African country's coast in 37 different operations earlier this week, officials say.
Human rights groups and media outlets have frequently reported on illegal pushbacks and other human rights breaches by Greek authorities.
Turkish foreign minister said the migration issue is a humanitarian and social issue, but that it has recently been abused by some politicians and turned into a political problem.
At the behest of Greece, the European Anti-Fraud Office did not release its report on Greece's illegal pushback until it leaked last month. Finally out, it exposes Athens' heavy-handed tactics against migrants.
Türkiye's Communications Director Fahrettin Altun has rebuked statements from Greece that accused Türkiye of sending migrants to Greek border.
Media outlets in Greece failed to retract fabricated reports on the supposed 'Turkish push-forward of irregular migrants,' said the Turkish Embassy in Athens.
The shipwreck took place off the western Libyan city of Sabratha, a major launching point for the mainly African migrants making the dangerous voyage across the Mediterranean.
Search for dozens of unaccounted people continues after two boats carrying about 140 people sink. Separately, Turkish authorities rescue 48 refugees pushed back by Greek coast guard into Turkish waters.
"Those people are coming here, they're not necessarily working or they're working in low-skilled jobs, and they're not contributing to growing our economy," says UK Interior Minister Suella Braverman.
Cases underscore challenges for US President Biden's administration as it faces a record number of unaccompanied kids arriving at the southwest border.
Spain's Civil Guard says police found the bodies of seven migrants in three areas off the country's southeastern coast and officials are not ruling out finding more bodies in the coming hours and days.
Türkiye's President Recep Tayyip Erdogan says "with the efforts of our Coast Guard... we have saved the lives of 41,000 people who were left to die by Greece" in the Aegean sea over the last two years.
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