As reported by Censor.NET, journalist Roman Nedzelski wrote this on his Facebook page.
"Nothing betrayed Shtirlits like that…. I looked around here - all ankle boots of self defence forces which stormed district departments of Sloviansk and Kramatorsk are the same. So I decided to search. I found that these boots were produced by Russian company Buteks. The style was called Mangust and it was bought by Russian forces. Now this style is no longer produced was lifted from manufacturing. So "Donbass self defence" had been wearing this boots at least for half a year. The rest is up to you..." the journalist wrote.