Turkey's Vice President, Fuad Oqtay, announced that the number of earthquake victims had risen to 3419, while the number of wounded exceeded 20 thousand.
According to Reuters, the number of victims of the all-Syria earthquake rose to more than 1,600 and 3,700 were injured.
Extreme winter weather hampered efforts to search for survivors overnight.
On the other hand, the European-Mediterranean Earthquake Monitoring Centre said that a magnitude 5.7 earthquake shook eastern Turkey, adding that the earthquake was 46 kilometres deep.
Search and Rescue
Turkey deployed more than 24,400 search and rescue personnel in the earthquake area.
Turkey's Director-General of Disaster and Emergency Management, Orhan Tatar, said he expected the number to rise as additional personnel arrived despite the obstruction of winter weather conditions.
He added: "Bad weather conditions continue in the region. It may therefore be difficult from time to time to move search and rescue teams there. "
Overnight temperatures in the earthquake-hit city of Gaziantep dropped to minus 5 degrees Celsius.
He added that 10 vessels were helping rescue efforts by transporting the wounded to private hospitals from the port of Iskandarun on the Mediterranean Sea.
Some 55 helicopters had carried out 154 sorties to transport emergency assistance and approximately 85 trucks had distributed food items.