Ramzan Kadyrov, leader of Russia’s Chechnya region and a staunch ally of President Putin, claims to have sent 1,000 elite fighters to fight in Ukraine.
The Chechen warriors often share videos of military drills online which has gained them a fearsome reputation.
The Kadyrovtsy, who have been used as a PR tool in Putin’s war, allegedly murdered their own comrades and “operated a torture chamber” in a glass factory on Yablonska Street.
The latest claims seem to corroborate previous reports by Ukraine’s ombudsman for human rights, Lyudmila Denisova.
Deputy Commander of Ukraine’s Territorial Defence Forces, Artem Hurin, was one of the first to visit Borodyanka, northwest of Bucha after Ukrainian forces recaptured the town April 2.
Mr Hurin, who is also a member of the city council in the neighbouring town Irpin, said: “They would bring heavily wounded Russian soldiers to a big hospital they had there, and those who were very heavily wounded, they would just shoot them. No one other than the Kadyrovtsy did this.”