The department also advised private Americans to reconsider any plans they may have to visit the Himalayan country and asked those already there who wish to leave to submit information to the embassy.
Nepal on Tuesday recorded yet another highest single-day rise of 7,660 new cases of the coronavirus.
There are currently 48,711 active cases across the country.
The Kathmandu Valley has turned into a COVID-19 hotspot as infection rate has seen a sudden spike in the past few days.
A cliffhanger in the opening episode of Kathmandu Connection left me grinning with delight.
Their certificates have been revoked, the ministry said 'after receiving a complaint about the fake ascent, the ministry had formed a committee to investigate the matter.'
At least 1,865 ducks, 622 quails, 32 chickens, 25 turkeys, 542 eggs and 75 kg chicken fodder were destroyed after detection of virus at the local farm, the release said.
Senior Superintendent of Police Rajesh Nath Bastola said the arrests were made in coordination with the airline company.
Nirmal Purja completed the climb of the 14 mountains, all over 8,000 metres (26,250 feet) in seven months, the post said.
While Leela Narayanan Mandredath died in Simikot on Monday morning, possibly due to high altitude sickness, Satya Lakshmi Narayana Subba Rao Grandhi Veera Venkata suffered a heart attack.
The tremor was the aftershock of the April 25 Great Quake, NSC chief Lok Bijaya Adhikari said.
India will build a strategic railway link between Raxaul in Bihar and Kathmandu in Nepal to facilitate people-to-people contact and bulk movement of goods.
The Indian team coached by Bibiano Fernandes have been drawn with hosts Nepal, Iraq and Palestine in Group D.