Yes, I heard that story a few times recently; I have not had time to confirm the story; no reason not to believe it.🤷♂️ One of the '40 thieves'.
https://freerepublic.com/focus/news/4226168/posts?page=1
At least 40 dead, over 100 injured after multiple gunmen open fire at concert hall near Moscow
New York Post ^ | March 22, 2024 | Reuters
maybe this story ?