La Guaira, a region north of the capital, has been hit the hardest, officials said. The state is also home to one of the country's two main ports and to Simón Bolívar International Airport in Maiquetía - the country's main airport.

Many people are missing, and it is likely the death toll will rise as rescue efforts continue.

In La Guaira, Natacha Diaz told the BBC that her two daughters - aged 22 and 23 - were trapped under the rubble of a collapsed shopping centre, where they worked as manicurists.

"They were with their friends," she said. "I just want them to be found. I have faith and hope that they are there."

"I just want them back with me. They are all I have, please."

National assembly head Jorge Rodriguez said in a state TV broadcast on Friday that the death toll had reached 920, with at least 172 people still believed to be trapped.

In La Guaira alone, at least 243 people have been rescued, the top lawmaker - who is the interim president's brother - said.

Dozens of people have been rescued alive, which "brings us joy that they can embrace their families and loved ones", Acting President Delcy Rodríguez said at a televised briefing on Friday.

There has been 214 aftershocks since the initial quakes, she added.

One case that boosted morale across Venezuela is the rescue in La Guaira of three young siblings, who emerged from the rubble covered in dust and debris, footage broadcast on state television showed.

"Come here, my child, come here," a man says to the first child as he emerges alive from a gap between chunks of concrete.

A girl then comes out, as the man asks her: "Are you siblings?", to which she replies: "Yes, there are three of us."

Shortly afterwards, with a little more difficulty, the third sister emerges, sobbing and covered in dust from head to toe.

Tributes are being paid to those who died. The wife of Venezuelan footballer Héctor Bello was killed while saving their daughter, according to his social media and local news.

Bello wrote on Instagram that "his precious love", named by Venezuelan news outlets as his wife Andrea, saved the life of their toddler during the quakes.

"I'll tell her the story of how you saved her, my love - how you gave your own life for our daughter, how you were a brave woman who never abandoned her, even as you took your last breaths," Bello wrote in one post.

One Portuguese national and two Brazilian citizens were also among those killed, their governments confirmed.

Four Spanish nationals were also among the dead, with 106 still unaccounted for, Spanish media reported, citing its foreign ministry.

Venezuela's Interior Minister Diosdado Cabello said multiple states had been affected by the twin quakes. In Caracas, the worst-hit areas were the neighbourhoods of Los Palos Grandes and Altamira.

The government said aftershocks had largely affected the country's northern coastline, including La Guaira, Aragua, Carabobo and Falcón.