According to the US Geological Survey (USGS), the temblor occurred at 4.17 a.m. at a depth of 17.9 km, the BBC reported.
Interior Minister Suleymon Soylu said 10 cities were affected: Gaziantep, Kahramanmaras, Hatay, Osmaniye, Adiyaman, Malatya, Sanliurfa, Adana, Diyarbakir and Kilis.
The tremor was also felt in Syria, Lebanon and Cyprus.
The authorities have said that a number of buildings in Gaziantep have collapsed, and some people may be trapped.
Turkish seismologists said that a second tremor hit the region just minutes later.
Turkey lies in one of the world’s most active earthquake zones.
In 1999, more than 17,000 people were killed after a powerful tremor rocked the north-west of the country.
In a more recent quake, 117 people died when a 7.0-magnitude earthquake struck the city of Izmir on October 30, 2020.
–IANS
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