FILE - In this Friday, Feb. 8, 2019 file photo, people watch rescue workers searching for survivors in the rubble of an eight-story apartment building which collapsed in Istanbul's mostly-residential Kartal district, on the Asian side of the city. Turkey's state-run news agency said Thursday Feb. 14, 2019 authorities have detained four people in connection with the collapse of the building that killed 21. Authorities have said the building's top three floors were illegally built.
FILE - In this Friday, Feb. 8, 2019 file photo, people watch rescue workers searching for survivors in the rubble of an eight-story apartment building which collapsed in Istanbul's mostly-residential Kartal district, on the Asian side of the city. Turkey's state-run news agency said Thursday Feb. 14, 2019 authorities have detained four people in connection with the collapse of the building that killed 21. Authorities have said the building's top three floors were illegally built. Emrah Gurel, file AP Photo
FILE - In this Friday, Feb. 8, 2019 file photo, people watch rescue workers searching for survivors in the rubble of an eight-story apartment building which collapsed in Istanbul's mostly-residential Kartal district, on the Asian side of the city. Turkey's state-run news agency said Thursday Feb. 14, 2019 authorities have detained four people in connection with the collapse of the building that killed 21. Authorities have said the building's top three floors were illegally built. Emrah Gurel, file AP Photo