Nearly 3,250 irregular migrants were held across Turkey over the past week, according to data compiled by Anadolu Agency from security sources.
Turkish security forces held some 1,300 migrants in the northwestern province of Edirne, which borders Greece and Bulgaria.
According to local sources in Edirne, Greece has stepped up efforts to send irregular migrants to Turkey in violation of the Geneva Conventions, the European Convention on Human Rights and the UN Convention Against Torture.
In Kirklareli and Tekirdag, also northwestern provinces, more than 180 migrants were held by security forces.
In Mugla, Canakkale, Izmir, Balikesir and Aydin on