Three Americans have died from the earthquakes and 12 Americans remain missing, the U.S. government has confirmed, according to a senior U.S. official.

More than 300 search and rescue personnel from the U.S. are now working on the ground in Venezuela, a senior administration official said.

The U.S. had committed more than $300 million to the earthquake response, including $200 million in funding for partner organizations and the United Nations Office for the Coordination of Humanitarian Affairs, according to the State Department.

Venezuela's acting president Delcy Rodriguez posted a video on social media showing a man rescued from a collapsed building after 106 hours trapped under the rubble.

As the race to find survivors in Venezuela continues, Bolivian rescuers pulled two survivors out of the rubble of a collapsed building over the weekend.

The video was posted by the Bolivian authorities on Sunday but does not specify when it was filmed.

Video shows rescuers pulling someone through a small opening and then rappelling slowly down the collapsed side of the building.

The officially reported death toll from the two powerful earthquakes that struck in Venezuela on Wednesday remained at about 1,400, with the last update on casualties being announced on Saturday.

El Salvador’s President Nayib Bukele also shared video of Salvadoran rescue crews.

"After 86 hours trapped under the rubble, and following 11 hours of intense work, we have successfully rescued 60-year-old Belkys Josefina Barreto García alive," he said on social media.

The woman had been trapped under a building in a hard hit town in La Guaira on the coast. The woman remains in "delicate" condition and has been transferred to hospital in Caracas, the Venezuelan capital.

There were shouts of "bravo" and clapping from bystanders and rescuers as she was carried on a stretcher into an ambulance.

-ABC News’ Victoria Beaule

About 75% of electricity service has been restored in La Guaira state, Venezuela's Acting President Delcy Rodríguez said. The region includes a major port.

"Teams continue working toward full restoration of electrical services in the state, as well as water services, which is at 68%, and roadways, which are about 90% restored, all the transit and circulation, which is very important for rescue operations," she said.

The death toll from the pair of powerful earthquakes that rocked Venezuela on Wednesday has risen to at least 235, according to the country's health minister, who spoke on state media.

At least 4,300 people were injured, according to the latest figures provided by the official.