A little bit on that Alexander Mamut guy:
http://rumafia.net/en/dosje/12 . One of the "7 banker" group.
He is the one who racketeered Euroset into selling itself at 990% discount.
Evroset was the largest retail network in Russia, built from scratch buy a man with a lot of talent, but no mafia connections. Alexander Chichvarkin was pretty much the most renowned businessman of his generation in Russia.
Chichvarkin fled to UK, and left a director to be his proxy.
They used the same tactic — director detained, and offered a trade at gunpoint. The director however managed to escape the capture too. In this case, after his bodyguards made a scuffle with police in his office.