A small aircraft veered off the runway and hit two helicopters while attempting to take off in Nepal's Lukla airport on Sunday, killing three people.
The plane, operated by Summit Air, was not carrying passengers at the time of the incident.
Officials said the cause of the incident was not immediately known.
"Two people died on the spot and the third one died while undergoing treatment in a hospital in Kathmandu," an airport official told Reuters.
Three more people are being treated for injuries at nearby hospitals.
Lukla, which is also known as the gateway to the Mount Everest.

Fire in rebel-held east Congo kills 24 schoolchildren
Trump touts $5,000 payout if Republicans win as Vance waits in wings
Search expands after Philippine ferry fire kills five and leaves dozens missing
Trump says Iran war to end after US midterm elections
At least 20 killed in cargo vessel fire at China shipyard, state media reports
