Rescue workers raced against time Saturday to find survivors under the rubble after a powerful earthquake claimed 22 lives and left more than 1,200 injured in eastern Turkey.

The magnitude 6.8 quake struck on Friday evening, with its epicentre in the small lakeside town of Sivrice in Elazig province, and was felt across neighbouring countries.

President Recep Tayyip Erdogan cancelled a speech in Istanbul and headed to Elazig where he attended the funeral of a woman and her son.

He vowed the state would do “everything we can” to help those affected in a disaster he described as a “test”.

The Turkish government’s disaster and emergency management agency (AFAD) said 42 people had been rescued alive from collapsed buildings in Elazig.

Interior Minister Suleyman Soylu said earlier on Saturday 22 people were estimated to be trapped under the rubble.

Turkish news channels showed live images of people rescued. Among those found alive was a woman called Azize who had contacted emergency authorities and spoken to a rescue worker by telephone, state news agency Anadolu reported.

Nearly 2,000 search and rescue personnel were sent to the region while thousands of beds, blankets and tents have been provided, the presidency said.

The rescue efforts have been taking place in freezing temperatures as wood and plastic were burned to keep crowds warm.

Hundreds of people were anxiously waiting on the other side of police barriers including a man who gave his name as Mustafa.

“I have three relatives in that building: one man, his wife and her mother. They are still under the rubble,” the 40-year-old told AFP.

“I was home during the earthquake. It lasted for so long, it was like a nightmare. I froze in the living room when it happened, my wife and our two children were screaming and running around,” he said.

He added that some neighbours jumped out of the windows in panic as families including his were forced to spend Friday night on the streets.

Some 20 rescuers were on top of the remains of one collapsed building, slowly clearing the rubble one bucket at a time surrounded by broken wooden beams and concrete.

The US Geological Survey assessed the magnitude as 6.7, slightly lower than AFAD, adding that it struck near the East Anatolian Fault in an area that has suffered no documented large ruptures since an earthquake in 1875.