An anticholinergic doesn't sound like the KGB. But then there are many among chemical warfare agents and that seems more plausible. Though given the KGB's apparent preference for rarer poisons like polonium and Novichok, it still looks amateurish. Does he have an ex-wife?

It's Putin's go-to for political dissidents.

The Putinizer strikes again !

We know who uses poison as a weapon of choice. This band has been resisting Putin, and this individual streaked during the Soccer games, likely riling Putin. No surprise if he wanted this man dead.

Poisoning political opponents is a Russian specialty.