Bogota: A charter plane carrying a Brazilian football team crashed in the mountains in Colombia, killing as many as 75 people, officials said.
But they said six survived, including four players.
Brazil's President Michel Temer declared three days of mourning for the victims.
The LAMIA airlines charter declared an emergency at around 10 pm local time today, reporting it had suffered "electrical failures," and crashed a short time later near the city of Medellin, officials said.
The plane was carrying members of Chapecoense Real, a Brazilian football club that had risen from obscurity to play in the Copa Sudamericana finals on Wednesday against Atletico Nacional of Colombia.
"The pain is terrible. Just as we had made it, I will not say to the top, but to have national prominence, a tragedy like this happens. It is very difficult, a very great tragedy," club vice-president Ivan Tozzo told Globo SportTV.
In all, there were 72 passengers and nine crew on board the British Aerospace 146.
A police commander, Jose Gerardo Acevedo, initially said only five people survived the crash, but Colombian authorities later said a sixth person was found alive, raising hopes there might be other survivors.
"The rescue of a sixth survivor, player Helio Hermito Zampier Neto, who is in the process of being evacuated, is confirmed. The possibility that other people will be found alive has not been ruled out," Colombia's disaster risk management agency said.
One of the survivors was Alan Ruschel, a 27-year-old defender for the Brazilian team, the head of Colombia's civil aeronautics agency, Alfredo Bocanegra, told reporters.
Radio Caracol said two other players -- Marcos Danilo Padilla and Jackson Follmann -- also survived and were taken to hospitals, along with a flight attendant and a journalist.
The LAMIA airlines flight originated in Sao Paulo, Brazil and had made a stop in Santa Cruz, Bolivia before continuing on to Rionegro, a city near Medellin.
The airport statement said the plane reported an emergency at 10 pm local time. "It declared it had electrical failures."
It went down about 50 kilometers from Medellin, Colombia's second largest city, in an area called Cerro Gordo.
Elkin Ospina, the mayor of the town of La Ceja near the crash site, said the mountainous terrain was some 3,300 metres above sea level and very difficult to access.
Rescuers carrying stretchers had to hike for more than half an hour to reach the site.
On its Twitter account, the airport said a plan to use an air force helicopter had to be shelved because of bad weather in the area.