Images coming in from the cities hit by Monday’s earthquake show areas of complete devastation.The epicentre of the first quake at 04:18 local time (01:18 GMT) was near Gaziantep in Turkey.
Some apartment blocks in the city, which is home to more than two million people, have been totally flattened.
Turkey’s President Recep Tayyip Erdogan has declared a three-month state of emergency in Gaziantep and nine other cities.
Among them is the Mediterranean port city of Iskenderun, in the southern province of Hatay, where buildings and docks have been reduced to rubble.
On Tuesday, the sky above Iskerendun was black with smoke after hundreds of shipping containers at the city’s port facility caught fire.
It is thought that more than 1,200 buildings have been destroyed by the earthquake in Hatay province alone.Iskerendun is one of two major container ports on Turkey’s south-east coast.