Sibel Kaya, 40, was rescued in southern Gaziantep province, some 170 hours after the first of two quakes struck the region, the report said. Rescue workers in Kahramanmaras had also made contact with three survivors, believed to be a mother, daughter and baby, in the ruins of a building.

With chances of finding more survivors growing more remote, the toll in both countries rose above 33,000 on Sunday and looked set to keep growing. It was the deadliest quake in Turkey since 1939.

On Sunday, rescue teams from Russia, Kyrgyzstan and Belarus pulled a man alive from a collapsed building in Turkey, about 160 hours after the quake struck, Russia's Ministry of Emergency Situations said.

"Rescue work to remove the man from the rubble lasted more than four hours," the ministry said on the Telegram messaging platform, alongside a video showing rescuers taking a man from rubble and carrying him away.

"The work was carried out at night with a risk to life coming from a possible collapse of structures."

In a central district of one of the worst hit cities, Antakya in southern Turkey, business owners emptied their shops on Sunday to prevent merchandise from being stolen by looters.

Residents and aid workers who came from other cities cited worsening security conditions, with widespread accounts of businesses and collapsed homes being robbed.

Turkish President Tayyip Erdogan has said the government will deal firmly with looters, as he faces questions over his response to the earthquake ahead of an election scheduled for June that is expected to be the toughest of his two decades in power.

The quake is now the sixth most deadly natural disaster this century, behind the 2005 tremor that killed at least 73,000 in Pakistan.

A father and daughter, a toddler and a 10-year-old girl were among other survivors pulled from the ruins of collapsed buildings in Turkey on Sunday, but such scenes are becoming rare as the number of dead climbed relentlessly.

At a funeral near Reyhanli, veiled women wailed and beat their chests as bodies were unloaded from lorries - some in closed wood coffins, others in uncovered coffins, and still others just wrapped in blankets.

Some residents sought to retrieve what they could from the destruction.

In Elbistan, epicentre of an aftershock almost as powerful as Monday's initial 7.8 magnitude quake, 32-year-old mobile shop owner Mustafa Bahcivan said he had come into town almost daily since then. On Sunday, he sifted through rubble searching for any of his phones that might still be intact and sellable.

"This used to be one of the busiest streets. Now it's completely gone," he said.

In Syria, the disaster hit hardest in the rebel-held northwest, leaving homeless yet again many people who had already been displaced several times by a decade-old civil war. The region has received little aid compared with government-held areas.

"We have so far failed the people in north-west Syria," United Nations aid chief Martin Griffiths said on Twitter from the Turkey-Syria border, where only a single crossing is open for U.N. aid supplies.

"They rightly feel abandoned," Griffiths said, adding that he was focused on addressing that swiftly.

The United States called on the Syrian government and all other parties to immediately grant humanitarian access to all those in need.

Earthquake aid from government-held regions into territory controlled by hardline opposition groups has been held up by approval issues with Islamist group Hayat Tahrir al-Sham (HTS) which controls much of the region, a U.N. spokesperson said.

An HTS source in Idlib told Reuters the group would not allow any shipments from government-held areas and that aid would be coming in from Turkey to the north.

The United Nations is hoping to ramp up cross-border operations by opening an additional two border points between Turkey and opposition-held Syria for aid deliveries, spokesperson Jens Laerke said.

U.N. Syria envoy Geir Pedersen said in Damascus the United Nations was mobilising funding to support Syria. "We're trying to tell everyone: Put politics aside, this is a time to unite behind a common effort to support the Syrian people," he said.

The quakes killed 29,605 people in Turkey and more than 3,500 in Syria, where tolls have not been updated for two days.

Turkey said on Sunday about 80,000 people were in hospital, and more than 1 million in temporary shelters.