Ammon News - Around 5,000 people have been evacuated after a magnitude-7.7 earthquake smashed an area in eastern Indonesia, killing at least 51, blocking roads and causing landslides, authorities said on Sunday.

Thirty-six people were seriously injured in the Saturday morning quake in East Nusa Tenggara province, while 77 had minor injuries, Deputy Health Minister Benjamin Paulus Octavianus told a televised meeting.

The quake, followed by some 341 aftershocks, is the Southeast Asian nation's deadliest since a 2022 quake killed hundreds in West Java.

More than 3,300 people in the ‌Sikka region ‌self-evacuated or were in a sports arena, said ‌the ⁠disaster mitigation agency BNPB.

Some ⁠Sikka residents were stranded outside collapsed homes under a makeshift tent made out of tarp, while some people received treatment in a tent outside a hospital in the port town of Maumere.

"I only brought my body," Abdul Mutas, 63, told Reuters after he and his family slept on a tarp surrounded by trees ⁠in the town of Sikka.

"The tides were rising, so ‌we ran," he said, describing their ‌reaction to the quake.

"Almost all of Sikka's residents didn't dare stay ‌indoors, so they slept on a porch or a tent ‌outside," Simon Subandi, deputy regent of Sikka, told news channel KompasTV.

More than 3,500 military and police officers have been deployed to the region, Cabinet Secretary Teddy Indra Wijaya said in a statement.

Rescuers reached parts of Maumere ‌that had been blocked by landslides, Indonesia's search and rescue agency said. There was no immediate count ⁠of those ⁠missing, but most of them were trapped under rubble, and more than 1,300 homes were damaged, BNPB said.

Twenty petrol stations were not operational due to power outages, said state energy firm Pertamina.

The East Nusa Tenggara government is considering declaring an emergency for the province, BNPB said, which would allow authorities to mobilize resources and funding.

The area of the quake was hit in 1992 by a magnitude-7.5 earthquake that caused extensive destruction, Indonesia's geophysics agency said.

Indonesia, a sprawling archipelago of 290 million people, straddles the "Pacific Ring of Fire", a seismically active zone where tectonic plates meet, triggering frequent earthquakes and volcanic eruptions.