Several prison employees have been fired and more than 30 others suspended after their training class was photographed making a Nazi salute in their uniforms.

Two academy trainers and one cadet were dismissed from duty after the image emerged, the US Department of Military Affairs and Public Safety (DMAPS) announced on Friday.

The photograph shows trainees at the West Virginia Division of Corrections and Rehabilitation making the Sieg Heil gesture underneath a sign reading “Hail Byrd” – a reference to a class trainer.

Every trainee involved has been suspended without pay amid an investigation by DMAPS and the Division of Corrections and Rehabilitation, amounting to 34 individuals.

Secretary of state for military affairs and public health, Jeff Sandy, said he was “outraged” by the incident.

The far-right plot to normalise white supremacy in the US Show all 23 1 /23 The far-right plot to normalise white supremacy in the US The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network, a white nationalist group, burn a swastika and cross during a party outside Atkins, Arkansas, U.S on March 9, 2019 Reuters The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network hold up balloons decorated as the face of Adolf Hitler and give a white-power hand signal as they celebrate the German fascist's birthday outside Atkins, Arkansas REUTERS The far-right plot to normalise white supremacy in the US Billy Roper of the ShieldWall Network attends a party at a home outside Atkins. The group primarily operates in Arkansas and includes three other members who were recently charged with assault in connection with the beating of a gay man, according to police reports REUTERS The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network march to a rally opposing legal abortion and supporting gun rights at the state capitol in Little Rock, Arkansas REUTERS The far-right plot to normalise white supremacy in the US Jeff Schoep, former chairman of the National Socialist Movement, speaks during a rally at the state capitol in Little Rock, Arkansas on November 10, 2018 Reuters The far-right plot to normalise white supremacy in the US Crosses lit by members of the Loyal White Knights of the Ku Klux Klan burn outside Yanceyville, North Carolina, U.S., November 4, 2017. The Loyal White Knights is one of the largest Klan groups in the United States, according to the Anti-Defamation League, which tracks extremist groups REUTERS The far-right plot to normalise white supremacy in the US Members of the Loyal White Knights of the Ku Klux Klan prepare for a cross-burning outside Yanceyville, North Carolina, U.S., November 4, 2017 REUTERS The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network perform a Nazi salute as a swastika and cross burn during a party outside Atkins, Arkansas, March 9, 2019 REUTERS The far-right plot to normalise white supremacy in the US High chairs are seen in a building owned by The Knights Party, a white nationalist group formerly named the Knights of the Ku Klux Klan, outside Harrison, Arkansas, March 10, 2019. The organisation is opening an education center for the children of white nationalists REUTERS The far-right plot to normalise white supremacy in the US Chris Barker of the Loyal White Knights of the Ku Klux Klan addresses an audience before a cross-burning outside Yanceyville REUTERS The far-right plot to normalise white supremacy in the US A figurine of a black man being lynched inside the home of Chris Barker of the Loyal White Knights of the Ku Klux Klan in Yanceyville REUTERS The far-right plot to normalise white supremacy in the US John Carollo, a member of the ShieldWall Network, holds up a photo montage of (clockwise from top left) Oklahoma City bomber Timothy McVeigh, Adolf Hitler, founder of the American Nazi Party George Lincoln Rockwell, Charleston church shooter Dylann Roof and Hitler's deputy Rudolf Hess, while attending a party at a home outside Atkins REUTERS The far-right plot to normalise white supremacy in the US Symbols of white nationalism are displayed on the jacket of a member of the National Socialist Movement as they gather in a parking lot before attending a rally at the state capitol in Little Rock, Arkansas REUTERS The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network prepare a swastika for burning to celebrate Adolf Hitler's birthday outside Atkins REUTERS The far-right plot to normalise white supremacy in the US A new member of the ShieldWall Network, Nicholas Holloway, and other members of the white nationalist group go boating to celebrate Adolf Hitler's birthday outside Russellville, Arkansas REUTERS The far-right plot to normalise white supremacy in the US Courtney Calfy, wife of Julian Calfy, helps to prepare a meal as members of the ShieldWall Network gather to celebrate Adolf Hitler's birthday outside Atkins, Arkansas REUTERS The far-right plot to normalise white supremacy in the US John Carollo, a member of the ShieldWall Network, on the phone during a celebration of Adolf Hitler's birthday outside Atkins, Arkansas REUTERS The far-right plot to normalise white supremacy in the US A plaque on top of a flagpole with the number 1488 is carried by members of the National Socialist Movement as they attend a rally at the state capitol in Little Rock, Arkansas, November 10, 2018 REUTERS The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network John Carollo, Julian Calfy and Nicholas Holloway gather at a member's home before departing to disrupt a Jewish Holocaust memorial event in Russellville, Arkansas REUTERS The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network burn a swastika to celebrate Adolf Hitler's birthday outside Atkins, Arkansas REUTERS The far-right plot to normalise white supremacy in the US Chris Barker of the Loyal White Knights of the Ku Klux Klan is seen inside what the group calls its church, next to his home in Yanceyville REUTERS The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network go boating to celebrate Adolf Hitler's birthday outside Russellville, Arkansas REUTERS The far-right plot to normalise white supremacy in the US Members of the ShieldWall Network, a white nationalist group, prepare to burn a swastika and cross during a party at a home outside Atkins, Arkansas REUTERS

“I cannot stress enough how this betrays the high standards and professionalism of the men and women of corrections, who successfully carry out their vital and daunting public safety mission every day and around the clock,” Mr Sandy said.

“We are committed to a full and complete investigation that we will present to Governor Justice and to the public once it is finished.”

West Virginia governor Jim Justice called for everyone involved in the photograph to be fired.

An investigation into the incident is nearly complete and will then be released to the public, Mr Sandy said in a statement.

The incident comes as the number of violent hate crime incidents hit a 16-year high in the US, according to the FBI.

A report on hate crimes in 30 major US cities recorded the steepest rise since 2015 last year, with nearly all extremist killings carried out by the far-right.

The Centre for the Study of Hate and Extremism’s report declared 2018 “the worst year ever for antisemitic killings in the United States”.