As reported by Censor.NET, this was written by investigative blogger Iraklii Komakhidze on his Facebook page.
One of the mercenaries was identified by him during OSINT.
"A profile of some Zilimkhan (second name Osman) Ramzanov, born Oct.r 7, 1977, from Grozny has been discovered in VKontakte social network. The profile of this Russian-Chechen militant shows that he is a member of a patrol police regiment of the Russian Interior Ministry, named after A. Kadyrov (Senior)", the message reads.
There is a photo on Ramzanov's profile dated March 24, 2015, where geographic location is marked: Zlitna Street, Donetsk, Ukraine. A group of "volunteers" poses on it, all of them being employees of the Interior Ministry of the Chechen Republic.
Another photo shows insignia of the "Sparta" illegal armed group. It's possible that Chechen reinforcements act together with this terrorist group.
"After checking Ramzanov's VKontakte friends, we find a lot of other Chechen policemen who already visited Donbas", the blogger says.
He also reminds that last December, during a show at a stadium in Grozny, police officers from Chechnya (patrol police regiment named after Akhmad Kadyrov) signed a report to the Minister of Internal Affairs of the Chechen Republic Alhanov that they are "ready to execute any order of the Supreme Commander in Chief - Russian President Vladimir Putin, Minister of Internal Affairs of the Russian Federation Vladimir Kolokoltsev and head of the Chechen Republic Ramzan Kadyrov."