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

Stephen Allen, USAID's Disaster Assistance Response Team leader for the agency’s earthquake response, said his top priority is getting two American urban search and rescue teams to the region.

"Every hour does count in the first few days,” he said.

The responders are en route to Turkey, where they are expected to land at Incirlik Air Base in Adana Wednesday morning local time, Allen said. They’ll immediately start the long journey to Adıyaman, a city in southeastern Turkey that’s been heavily impacted by the quake, but has not had access to many search and rescue teams, Allen said.

The Americans are bringing about 170,000 pounds of specialized tools and equipment, including hydraulic concrete breaking gear, saws, torches, drills and advanced medical supplies to treat and triage the wounded, he said. They will also have about a dozen dogs who Allen said will play a “very key” role in looking for survivors strapped in the rubble.

Sending search and rescue teams to a disaster site so far away is “not something that we would normally do, frankly,” he said, however Turkey officials asked for assistance because its own considerable national search and rescue capabilities are outmatched by the “size and scale” of the devastation.

“I do need to emphasize the level of devastation, the level of damage, and the expected result in loss of life is massive. It’s massive,” he said.

-ABC News’ Shannon Crawford