Nepal has been hit by a magnitude 7.4 earthquake as it struggles to recover from last month's disaster.
Terrified crowds fled buildings in Kathmandu, which was already badly damaged, and the latest quake could be felt as far away as Delhi and Dhaka, in Bangladesh.
It struck near the base camp for Everest at shortly after 8am BST on Tuesday and was measured at a shallow depth of about 19 km (12 miles).
The US Geological Survey initially measured it at magnitude 7.1 but later increased the strength, saying the epicentre was near the Himalayan town of Namche Bazar.
Casualty figures are not yet know but initial reports suggested it was not as destructive as the previous earthquake.
An emergency worker speaking to Sky News from the Nepalese capital said it was "very distressing" and put increased pressure on emergency and aid workers.
Olle Castell, the response manager at charity Plan UK, said the quake lasted around 30 seconds and felt like an "aftershock".
"Everyone is very worried and under emotional distress," he added. "Things were shaking and i could see the trees moving like it was a strong wind but there is no wind at all."
It follows the 7.8-magnitude earthquake that struck on 25 April, killing at least 8,046 people and injuring more than 17,800.
Independent News Service