It was one of the most powerful earthquakes ever recorded in Turkey, even shaking buildings hundreds of miles away in Israel.
Most of the initial casualties from the magnitude 7.8 temblor that hit early Monday were in Turkey and neighboring Syria. The two countries have reported more than 500 deaths, but the death toll was expected to increase.
Here are some pictures showing the aftermath of the earthquake, starting with an injured child getting help in the Syrian town of Jandaris, which sits in the rebel-held part of Aleppo Province.
Rescue crews and volunteers hunting for survivors in the rubble in Diyarbakir, Turkey.
The earthquake leveled buildings in the Turkish city of Malatya.
Residents looking toward a destroyed building in Adana, Turkey.
Turkish emergency workers helping a victim in Diyarbakir.
The Syrian Civil Defense, also known as the White Helmets, tries to extract a man from the rubble in Azaz, a town near the border with Turkey.
Rescue workers pull a boy out from the rubble in Dana, in the Syrian province of Idlib, which is also controlled by rebels.
An injured child awaiting treatment at the Bab al-Hawa Hospital in Idlib Province.
A four-story building leveled in Gaziantep, Turkey.
An apartment building was left uninhabitable in Kahramanmaras, Turkey.
The earthquake severely damaged the historical Yeni Mosque in Malatya.