It was quite specific from my posts' details.

Ilya was gunned down by the FBI, not just someone, according to the items I assembled in my post.

According to his wife's FB (which I did not include here) 40 bullets, body and face mutilated.

They had followed him in travels to the town of Hernando Mississippi and he was apparently shot when non compliant with agents' demands, I'm guessing.

Basically judged guilty and executed.

From Ilya's posting history, trying to be respectful of the dead here, he had abysmally terrible human communication skills and very poor judgement. If something could happen to anyone like this it would be to him.