More than 600 people are now being investigated in Turkey over buildings that collapsed in the deadly earthquake on 6 February, the government has said.
Ednews.net reports citing Turkish media that on Saturday, Justice Minister Bekir Bozdağ said 184 suspects - including construction contractors and property owners - had already been arrested.
For years, experts warned that endemic corruption and government policies meant many new buildings were unsafe.
The confirmed death toll in Turkey and Syria has now exceeded 50,000.