LONDON, England (CNN) -- As British authorities prepare to resume an inquiry into a hotel clerk's death in Basra while held by British soldiers in 2003, a video has emerged allegedly showing a British soldier abusing Iraqi prisoners.
The video shows Cpl. Donald Payne, formerly of the Queen's Lancashire Regiment, swearing and yelling at bound and hooded Iraqi prisoners as he orders them to stay in "stress positions" -- in this case, holding themselves in seated positions by leaning their backs against a wall while stretching out their arms, wrists bound with white plastic cuffs.
As one man after another slumps to the floor, Payne jerks them back to the position and yells at them.
"Get up! Get up! Get up!" he yells at one man as groans can be heard.
The 60-second video was released July 13 as evidence in the inquiry, but apparently went unpublicized until Monday. It was not clear whether the clerk, Baha Musa, 26, was among the prisoners.
Musa died in the custody of the Queen's Lancashire Regiment in Basra, southern Iraq, in September 2003.
An inquiry into his death and the British Army's use of the "conditioning techniques" used to prepare prisoners for interrogation got under way last month.
The British government banned the use of such techniques in 1972.
The inquiry, now on summer break, is set to resume September 16.
"The inquiry will independently identify what went wrong, will help us to understand how and why Mr. Musa died, and ensure that every possible lesson from this incident is learnt," said Mark Fenwick, a spokesman for the inquiry.
Payne became the first member of the British Armed Forces to admit a war crime when he pleaded guilty to inhumanely treating civilians at a court martial in September 2006.
He was dismissed from the Army and sentenced to a year in a civilian jail. Six other soldiers also faced the court martial, but were cleared in March 2007.
Britain's Ministry of Defense apologized and agreed last year to pay nearly $5.6 million (2.8 million pounds) to Musa's family and to the eight other men who were allegedly mistreated.
A post-mortem examination showed that Musa had been asphyxiated and suffered more than 90 injuries to his body.
In 2006 the Queen's Lancashire Regiment was merged with other units to form the Duke of Lancaster's Regiment.
CNN's Laura Perez Maestro contributed to this story from London.