MANTA, Ecuador — Rescuers in Ecuador pulled three people out alive after being trapped for more than 32 hours in the rubble of a shopping center that was flattened by this weekend's powerful earthquake.

Televised images of the dramatic pre-dawn rescue Monday in the hard-hit port city of Manta gave Ecuadoreans hope that scores of people still unaccounted for may yet be found even as the death toll from Saturday's 7.8-magnitude quake climbed to 413. At least one American was confirmed to be among the dead.

State Department spokesman John Kirby hasn't identified the person but said U.S. officials have been in touch with the victim's family.

To reach the survivors amid the debris in Manta, firefighters cut a nearly 21/2-foot hole in concrete, through which they pulled a woman. A group of firefighters applauded as she emerged headfirst from the debris, disoriented, caked in dust and complaining of pain but otherwise in good health.

Later, at the same site, they managed to rescue another woman and a young man. All three were rushed in ambulances to a nearby hospital. Christian Rivera, the head of emergency services for the capital, Quito, said that depending on the circumstances a person without serious injuries can survive up to a week under the rubble.

“After that, there's a quick decline and the rescuers' work becomes very difficult,” he said.

Still, there are good reasons to believe more people will be found alive as some 450 rescuers from Spain, Chile, Mexico and elsewhere work in the most-affected areas along the Pacific coast.

President Rafael Correa, upon arriving in Manta late Sunday, said that the priority remains finding survivors.

“Our grief is very large, the tragedy is very large, but we'll find the way to move forward,” Correa said, adding that the quake was the worst to hit Ecuador since one in 1949 that took over 5,000 lives. “If our pain is immense, still larger is the spirit of our people.”

As rescuers scrambled through the ruins near the epicenter, in some cases digging with their hands to look for survivors, humanitarian aid began trickling in. More than 3,000 packages of food and nearly 8,000 sleeping kits were delivered Sunday.

The Saturday night quake knocked out power in many areas along the coast, and some who fled to higher ground fearing a tsunami had no home to return to or feared structures still standing might collapse.

The country's Geophysics Institute said it recorded 230 aftershocks as of Sunday night.

Spain's Red Cross said as many as 5,000 people may need temporary housing after the quake destroyed homes, and 100,000 may need some sort of aid.

Aggravating matters were reports of looting, including in Manta, where 180 prisoners from a nearby prison escaped amid the tumult. Authorities said some 20 inmates were recaptured and others returned voluntarily.