I have no expertise in sleuthmanship, but I have to wonder if this entire episode is not related to the smuggling of a suitcase nuke trigger mechanism to the radical muslims in London. You also have to believe that by judging from the Brits response in handling this situation, that they are not going to brush this under the rug. They may slap a coat of paint on this to give it a different look, but they are probably onto the reason for this situation.
The Soviet KGB had a documented history of killing people with exotic materials (remember that Bulgarian dissident and the ricin pellet?), or making things look like "accidents," "suicides," or illnesses. (Maybe that's where Hillary's gang learned their tricks) It's naive at best to think that they would necessarily use crude methods like bullets. The KGB is no longer just an agency; under Pukin', they run the whole country, and are re-Sovietizing everything.
Think he was first; defining himself as an enemy of the Kremlin; of Putin as per his public investigations. . .converting to Islam on his deathbed; surely confirmed to Putin; that he did the right thing.
Not that Putin needed additional confirmation. . .
Using the 'same material' would be like advertising what one is doing regarding the trigger, suitcase nukes, and the poisoning. Not very secretive if you ask me. Too much of a red flag. 'They' would be playing their hand. That is precisely the Kremlin's mistake. A rather uncommon/exotic material is used in the commission of a crime. The 'smoking gun' has certain fingerprints on it.
Messing with the guy's brakes would have been less incriminating. Bludeoning the guy while out on a stroll and orchestrating a robbery would have left less of a trail.
What IS alarming though, is that the material is in 'circulation.'
Really? Is that true?