At least seven people, including a young boy, a girl, and two women, lost their lives when their vessel sank off the Greek island of Lesbos on Thursday.
The incident occurred around 2 a.m. (2300 GMT) when a Greek coast guard patrol spotted the sinking boat north of the island.
While 23 individuals were rescued, the search and rescue operation is ongoing, and the exact number of people on board remains unknown.
Greece, a key entry point for migrants and refugees seeking refuge in Europe, has witnessed numerous such tragedies.
In 2015, nearly a million people landed on its shores. Last year, approximately 54,000 migrants reached Greece, making it the second-largest entry point for migrants in southern Europe, according to the UN refugee agency, UNHCR.
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