An earthquake of magnitude 6.6 in Nepal early on Wednesday killed four children and two adults, seriously injured five others as several houses collapsed in the western district of Doti, and shook New Delhi in neighbouring India.

Local media showed mud and brick houses destroyed by the quake in the Himalayan country and rescuers digging through the rubble to look for survivors.

At least two people are reported missing, said Nepali army spokesperson Narayan Silwal.

Women in the district, about 430 km (270 miles) west of the capital, Kathmandu, were shown sitting in the open with babies wrapped in blankets to shield them from the cold. Volunteers rescued a cow trapped under the debris.

Ram Upadhyay, chairman of the Purbi Chowki rural municipality in Doti, said he was in a nearby village when the quake struck at 2:12am Nepal time (2027 GMT).

“It shook terribly and I rushed out immediately. Now we are collecting details including the dead bodies,” he said.

Five people were seriously injured as eight houses collapsed, said Bhola Bhatta, Doti’s deputy superintendent of police.

Nepal is still rebuilding after two major earthquakes in 2015 killed almost 9,000 people, destroyed whole towns and centuries-old temples and caused a $6 billion blow to the economy.

Prime Minister Sher Bahadur Deuba, who faces re-election later this month, offered condolences to the families of the victims. “I have instructed the relevant agencies to arrange immediate and proper treatment of the injured and the victims.”

A ground rescue team of the army has been rushed to the site, said spokesperson Silwal, and two helicopters were on standby in nearby Surkhet and Nepalgunj towns.

Kalpana Shrestha, a senior bureaucrat of Doti district, said details were being collected from villages near the epicentre and that one child was among those rescued from under the debris.

Nepal’s seismological centre set the earthquake at a magnitude of 6.6. The European-Mediterranean Seismological Centre (EMSC) had pegged the earthquake at a magnitude of 5.6.

The quake was centred about 158km (100 miles) northeast of Pilibhit, a populous city in the neighbouring Indian state of Uttar Pradesh, and occurred at a depth of 10km, EMSC added.

There were no reports of damage on the Indian side, though the quake woke up many residents of the capital New Delhi.