Chilling CCTV footage from the Kyiv suburb of Bucha on March 4 released on Friday shows Russian soldiers rounding up nine civilians at gunpoint. In the footage the nine men are marched across a street by Russian soldiers with their heads bowed clutching the waist of the man in front.
All except one of the men was tortured and then executed by Russian troops, it has been reported.
According to the Ukrainian government, the men were rounded up after it was discovered they had manned a checkpoint.
The survivor, Ivan Skyba, a local taxi driver, told the Associated Press that Russian troops had accused him and the other volunteers of being Nazi sympathisers.
They were also accused of guiding Ukrainian artillery fire as Russian forces made an unsuccessful attempt to take the Ukrainian capital.
One of the men was shot in front of Mr Skyba who was later beaten until he lost consciousness.
When he woke up, Mr Skyba saw the Russian troops leading the other men to the yard to execute them.
“I felt the bullet pierce my side. I fell and froze, pretending I was dead,” Mr said, describing how he survived the ordeal.
He eventually managed to escape and then fled to Poland.
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Another solider called Maxim said that he and his fellow troops were binge drinking to cope with implementing their orders.
He said: “Everyone here is like that. It’s easier like this to shoot civilians.”
The massacre came to light in April after Russian troops retreated leaving the streets strewn with dead bodies.