What a weird way of assassinating someone though.
He was so radioactive they had to bury him in a lead lined coffin and apparently I was reading that the radiation released also put Londoners in danger. ( ie if you drank from that teapot, washed and used again before anyone realised).
It was such an odd way of killing someone, I mean your average Joe can't get a bottle of polonium down the chemist.
It's a bit of an unforgettable way of killing someone.

I'm not sure who did it, but they had more connections than most of us.