The death toll continues to climb in Turkey and Syria 24 hours after the earthquake struck.

More than 4,300 people have died in the two countries following the devastating earthquake, officials said.

According to the Turkish Emergency and Disaster Management Organization (AFAD), 2,921 people have died in the country from the earthquake, with 15,834 people sustaining injuries.

Approximately 6,217 buildings have collapsed and about 7,840 people have been rescued from the debris and rubble, according to AFAD officials.

In Syria, 1,411 people have died since the earthquake struck the region, officials said.

-ABC News' Ellie Kaufman

President Biden called Turkish President Recep Tayyip Erdogan this afternoon, following the earthquake that caused devastation in Turkey and Syria, the White House said.

Biden extended condolences and "reaffirmed the readiness of the United States to provide any and all needed assistance to our NATO Ally [Turkey] in response to this tragedy," according to the White House.

"[Biden] noted that U.S. teams are deploying quickly to support Turkish search and rescue efforts and coordinate other assistance that may be required by people affected by the earthquakes, including health services or basic relief items," the White House said.

-ABC News' Ben Gittleson

State Department spokesman Ned Price told reporters Monday that while the department has not confirmed that any Americans were killed in the recent earthquakes abroad, officials were "realistic" about the high chances of that changing.

"We're all very sober about the implications of this and the fact that many countries, many nationalities are likely to be implicated just given the massive toll and destruction that this earthquake has cost," Price said.

In the meantime, he confirmed that all State Department staff in Turkey are accounted for.

The American consulate in Adana, Turkey, would be able to host first responders coming in from foreign countries, Price added.

-ABC News' Shannon Crawford

As the death toll climbs to 2,316 in Turkey, another 13,000 people in the country are reported to be injured, according to Turkish Emergency Management.

At least 5,606 buildings in Turkey have been completely destroyed, according to Turkish Emergency Management.

-ABC News’ Will Gretsky

The United States is “ramping up” assistance to Turkey and Syria, White House spokesperson John Kirby said Friday.

“In Turkey, a USAID Disaster Assistance and Response Team is already on the ground. And two of our most highly trained urban search and rescue teams are conducting operations in support of Turkish rescue efforts in Adana -- one of the hardest-hit areas inside the country,” Kirby said. “These teams have nearly 200 personnel combined between them, specialized equipment and canine support dogs, as well.”

Kirby said they’ve been able to “expand their operational reach with the support of U.S. military Blackhawk helicopters” to try and get around the extensive damage to roads and bridges.

“To date, they have been able to cover more than 630 sites across Adana [in Turkey],” Kirby said. “In Syria, our humanitarian partners continue to urgently scale up response efforts to reach people in need. That work will include, or has included, chartered flights that are transporting essential medical supplies and teams distributing hot meals and other food.”

The United Nations and its partners have successfully completed two humanitarian convoys into northwest Syria, Kirby said. One partner delivered 14 additional truckloads of supplies through the Bab-al-Hawa Crossing on the Turkey-Syria border, “totaling now 20 trucks of critical medicines, food and water to people in need over the last two days,” he said.

Kirby said U.S. sanctions imposed on Syria “will not prevent or inhibit prohibiting humanitarian assistance.”

-ABC News’ Justin Gomez