A Bangladeshi aircraft carrying 67 passengers and four crew crashed on Monday while coming in to land at the airport in the Nepali capital, Kathmandu, an airport official said.
He said that 17 people on board had been rescued.
The state of the other people on the flight from the Bangladeshi capital, Dhaka, operated by US-Bangla Airlines, was not clear, airport spokesman Birendra Prasad Shrestha said.
“We are trying to bring the fire under control. Details are awaited,” he said.
He added that the airport had been shut down and all other flights diverted.
“We’re now concentrating on evacuating the passengers.”
Television images showed smoke rising from the crash site.
Mountainous Nepal is notorious for air accidents.
Small aircraft often run into trouble at provincial airstrips.