Istanbul Governor Ali Yerlikaya said on Twitter that 436 irregular migrants, including 170 Afghan nationals, were held in 16 districts on Thursday.
They were handed over to the local migration office for deportation procedures, he added.
Meanwhile, acting on a tip, 32 irregular migrants — who were pushed back by the Greek Coast Guard into Turkish territorial waters — were rescued in a rubber boat off the coast of the Cesme district in western Izmir province.
Another coast guard team was dispatched off the Urla district in Izmir after learning that a group of asylum seekers had been stranded on a boat.
As a result, 90 irregular migrants and two alleged human traffickers were held by coast guard teams, said a source, who asked not to be named due to restrictions on speaking to the media.
They were later taken to the provincial migration office.
Source: Anadolu Agency