At least five people, including three children, died after a boat carrying 15 migrants sank off the coast of western Turkey on Nov. 12, the Turkish coast guard said.
One Iranian and 14 Afghan nationals were on the boat before it sank, the coast guard said, adding that search operations for the five missing people were continuing.
Turkey hosts more than three million Syrian refugees and up to 300,000 Iraqis.
Separately, Turkish security forces rounded up 73 illegal migrants including Iraqis, Iranians, Afghans and Pakistanis in the northwestern Turkish province of Kirklareli, the state-run Anadolu news agency reported on Monday.
The migrants were trying to reach Europe, it added. The Kirklareli region is on the border with Bulgaria.
Turkey and the European Union reached a deal in 2016 to stem the flow of migrants, with Ankara agreeing to take back migrants landing on Greek islands in exchange for incentives including financial aid.