It had nothing to do with voting; they were claiming domestic terrorism.

He purchased a firearm a couple weeks ago; they also claim he tweeted he was going to "stop the steal" in AZ, he said he did not remember making such a tweet and went back to look and couldn't find the one they referenced.

The beginning of his livestream yesterday explained it all.

In the name of someone much wiser than me, "you just gotta look it up."