The death toll from the devastating earthquake in Turkey and Syria rose as rescuers faced shortages of trucks, fuel and time. President Recep Tayyip Erdogan of Turkey visited the area near the epicenter.

Two days after a devastating magnitude 7.8 earthquake killed more than 15,000 people in Turkey and Syria, families huddled in the cold rain, hitching tarps to make improvised tents, resting on bits of furniture pulled from the wreckage and lining up for shoes, blankets — anything available.

Many were angry that it was taking so long for rescue crews with heavy machinery to arrive. In Kahramanmaras, where President Recep Tayyip Erdogan of Turkey visited on Wednesday, three bodies were recovered from a six-story building and there were at least six more victims in the rubble. “The volunteers were here, but not the state,” said a relative of two of the victims.

Buildings fell across streets all across southern Turkey, rendering them impassible, and a fire station in Pazarcik was turned into a makeshift funeral home. Cracks in the walls of buildings that still stood were wide enough to reach through. Broken glass litters the ground, threatening to slash the feet of survivors, many of whom are shoeless and still in the sleeping clothes they wore when the quake struck two days ago.

Here are key developments:

• The death toll in Turkey has passed 12,000, according to Turkey disaster management agency, the state Andalou News Agency reported early Thursday. In total, 12,391 people have died and 62,914 have been injured, according to the agency, known by its Turkish initials as AFAD.


• Mr. Erdogan, Turkey’s paramount politician for 20 years, made his first visit to the disaster zone on Wednesday to tell his people how much his government had already done to help, while urging that citizens “show patience” as more aid made its way to them. But the leader of the country’s largest opposition party rejected a call for unity, saying that Mr. Erdogan was “fully responsible.” Criticism of the government’s disaster response would only add to headwinds for Mr. Erdogan’s quest for re-election in May.


• Syria’s more than decade-long civil war is complicating efforts to get aid to the country. Many refugees displaced by the fighting live in the quake-stricken area of Turkey, and while aid was not crossing into Syria, bodies were.


• The humanitarian crisis has prompted Turks around the world to rally together and raise money and gather supplies to send home. Their efforts ranged from a bake sale in London to the gathering of donations at a nursing home in Berlin.


• In Turkey, Mr. Erdogan said rescue missions will focus on some of the hardest-hit provinces in Turkey: Hatay, Adiyaman and Kahramanmaras. In Syria, where more than a decade of civil war had already created a humanitarian crisis, at least 3,042 people died in the quake, according to the state Health Ministry and the White Helmets relief group.