A second earthquake of 7.6 magnitude has struck southern Turkey within 12 hours of a first massive earthquake that has already claimed hundreds of Turkish and Syrian lives, according to Turkey’s Disaster and Emergency Management Authority (AFAD).

AFAD said the second quake took place at 13:32 local time at a 7km depth and had its epicenter in the Elbistan region of the Kahramanmaras province.

Earlier on Monday, roughly 1,300 lives were lost as a first powerful 7.8 magnitude earthquake rocked southeastern Turkey and northern Syria.

Turkish president Recep Tayyip Erdogan said the first earthquake killed 912 and wounded 5,385 people in Turkey alone, describing the event as the “biggest disaster” since the 1939 Erzincan earthquake, according to Turkish state-owned news agency Anadolu. Around 2,818 buildings were toppled, the head of state added.

Syria’s state news agency reported 371 deaths and 1,089 injured in the Aleppo, Hama, Latakia and Tartous regions, as a result of the first earthquake.

This is a breaking news story and will be updated shortly.