More than 1,700 migrants and a number of smugglers have been detained near Turkey's Aegean coast.
Some 1,734 migrants and 16 smugglers were detained in the operation launched near the town of Dikili, in Izmir province on Turkey's Aegean coast.
The operation, aimed at stopping refugees reaching the Greek island of Lesbos, involved the coastguard, navy and police and was backed by air support, the military said in a statement
It comes as Turkey secured a deal with EU leaders aimed at discouraging migrants from travelling from Turkey to Greece.
The agreement involves closing the EU border on March 20 and sending back migrants who arrive in Greece after that date to Turkey.
Cameron asks EU leaders to back deployment of more international patrol ships close to Libyan coast in bid to deter migrant smugglers.
David Cameron will tell his European colleagues that the migration route from Libya to southern Italy is about to begin once more.