Erdogan acknowledges some problems with Turkey's quake response

President Tayyip Erdogan acknowledged on Wednesday some problems with Turkey's initial response to the earthquake that rocked the south but said normal operations have resumed, adding that the death toll in the country rose to 8,574.

Erdogan made his first visit to the devastated region since Monday, when two massive quakes hit within hours, just as confirmed deaths in Turkey and neighbouring Syria shot beyond 11,000.

Speaking to reporters in the Kahramanmaras province near the epicentre, with constant ambulance sirens in the background, Erdogan said there had been problems with roads and airports but that everything would get better by the day.

"On the first day we experienced some issues but then on the second day and today the situation is under control," he said.

The government aims to build housing within one year for those left without a home in the 10 provinces affected, he added.

The most destructive in decades, the initial tremor wrought havoc on hospitals, airports and roads, and knocked down more than 6,400 buildings in Turkey. Many residents have since complained about insufficient resources and slow emergency response.

"We had some problems in airports and roads but we are better today. We will be better tomorrow and later. We still have some issues with fuel...but we will overcome those too," Erdogan said after visiting tents set up by the Disaster and Emergency Management Authority (AFAD).

He also said citizens should only heed communication from authorities and ignore "provocateurs".

Turkish authorities say some 13.5 million people were affected in an area spanning roughly 450 km from Adana in the west to Diyarbakir in the east.