Brazil’s defence minister has said the plane crash which killed 71 people – including members of the country’s Chapecoense Real football team in Colombia – was murder.

“This was definitely no accident,” defence minister Reymi Ferreira told reporters. “This was a homicide. What happened in Medellin was murder.”

The charter flight was heading to the Colombian city of Medellin when it crashed in a mountainous area just outside it – the pilot had radioed to report that the plane had suffered an electrical failure and was out of fuel. Only six people survived.

With officials still investigating the circumstances in which the LaMia flight went down, Colombia’s civil aviation safety chief said the plane was in violation of international regulations on fuel reserves.

Mr Ferreira cited those regulations in accusing the pilot, Miguel Quiroga, who was killed in the crash.

“Obviously, if the pilot had complied with the regulation, which is to land in Cobija [in Bolivia] or Bogota [in Colombia], or had at least declared an emergency from the beginning, before he was about to have an accident,” Mr Ferreira added, “it’s possible this tragedy would not have happened.”

Chapecoense Real Tribute Show all 11 1 /11 Chapecoense Real Tribute Chapecoense Real Tribute Flowers hang from a soccer net at the Arena Conda stadium in Chapeco, Brazil AP Chapecoense Real Tribute Supporters of Brazilian football team Chapecoense take part in a vigil at Conda Arena Rex Features Chapecoense Real Tribute People surround a church during a mass in memoriam of the players of Brazilian team Chapecoense Real killed in a plane crash in the Colombian mountains, in Chapeco, in the southern Brazilian state of Santa Catarina Getty Chapecoense Real Tribute Fans of Chapecoense soccer team attend a mass at the Santo Antonio Cathedral in Chapeco, Brazil Getty Chapecoense Real Tribute A boy sits alone on the stands during a tribute to the players of Brazilian team Chapecoense Real Getty Chapecoense Real Tribute Supporters of the Brazilian soccer team Chapecoense gather at the Arena Conda Arena in Chapeco, Brazil EPA Chapecoense Real Tribute People surround a church during a mass in memoriam of the players of Brazilian team Chapecoense Real Getty Chapecoense Real Tribute Fans pays tribute to the players of Brazilian team Chapecoense Real Getty Chapecoense Real Tribute Fans pay tribute to the players of Brazilian team Chapecoense Real who were killed in a plane accident in the Colombian mountains, at the club's Arena Conda stadium in Chapeco, in the southern Brazilian state of Santa Catarina Getty Chapecoense Real Tribute Players of the Chapecoense were among 81 people on board the doomed flight that crashed into mountains in northwestern Colombia, in which officials said just six people were thought to have survived, including three of the players. Chapecoense had risen from obscurity to make it to the Copa Sudamericana finals scheduled for Wednesday against Atletico Nacional of Colombia Getty Chapecoense Real Tribute People work at the Desbravador or Pioneer Monument, symbol of the city, which is pictured with black stripes in tribute to players of Chapecoense soccer team in Chapeco, Brazil Reuters

Prosecutors in Brazil, Colombia, and Bolivia are conducting their investigation to hold the airline and those who oversaw the flight accountable.

Earlier in the week, a Bolivian aviation official claimed she was pressured by her bosses to cover up findings that the plane had dangerously low fuel levels.

Celia Castedo detailed her allegations in an open letter to Bolivian media.

Plane crash: Brazil President receives coffins of Chapecoense players

“I was subjected to harassment and pressure from my superiors … who ordered me to change the content of the report, which hours [before the flight] I had presented,” she wrote. “Based on a careful examination, I had made five observations, one of the most important of which referred to the fuel economy of the flight.”

Bolivia’s public works minister, Milton Claros, said Ms Castedo was trying to cover up her own errors.

“There were no observations made to the flight plan,” he told the Associated Press. He accused her of fabricating the documents after the crash.

Ms Castedo is in Brazil seeking asylum, but officials have urged Brazilian authorities to return her to Bolivia to face justice.

The letter comes after the arrest of Gustavo Vargas, the general manager of airline LaMia.

Investigators want to establish whether Mr Vargas is guilty of criminal failure to follow safety procedures, but Bolivian attorney general Ramiro Guerrero said those charges could escalate.