Reports in the Nepalese media have quoted some eyewitnesses to the plane crash in Kathmandu.
The Himalayan Times, a local newspaper in the region, quoted eyewitness Ghanashyam Shrestha, a staff member of Sita Air airlines, who said that the plane had to make an emergency landing after a bird hit the aircraft at the Manohara River in Madhyapur Thimi near Jadi Buti, before catching fire.
Another eyewitness Ganesh Thapa, added: "The aircraft looked unstable while it was taking off. I thought the pilots were trying to land on the bank of the Manohara River. It caught fire as soon as it touched the ground.”
A spokeswoman for local travel company Sherpa Adventures said the group of passengers who died in the plane crash today had arrived in Nepal on Wednesday and were due to begin trekking today.
She said they were on their way to the Khumbu area in the north east of the country, also known as the Everest region.
They were due to be trekking until October 16 and were with two Nepalese leaders.
Seven Britons, five Chinese, four Nepali passengers and three Nepali crew members were among the 19 people who died today when the plane crashed shortly after take-off near Nepal's capital, Kathmandu.
The aircraft carrying the people, said to be Sita Air airline's twin-engine Dornier, caught fire while making an emergency landing outside Tribhuvan International Airport after reported technical glitches.
At the time of the incident, the weather was clear and the cause of the crash was not immediately known.
The Foreign Office has set up a helpline for concerned relatives after seven Britons are believed to be among 19 people who died today in a plane crash in Nepal.
Relatives can call the FCO on 0207 008 1500.
The Foreign and Commonwealth Office is looking "urgently" into reports that seven Britons have been killed in a plane crash in Nepal today. Daybreak's Louisa James reports.
Responding to reports that seven Britons were on board the fatal Nepalese flight, a spokeswoman for the FCO said:
We understand that British nationals may be involved, and we are urgently seeking to confirm what has happened.
Our embassy in Kathmandu is talking to the airline and local authorities to find out whether Britons were involved.
Nepalese police said seven Britons, as well as five Chinese, were among 19 people who died when the plane crashed shortly after takeoff near Nepal's capital, Kathmandu.
The Foreign and Commonwealth Office is looking "urgently" into the claims.