The evidence you mentioned, will come from whatever the FBI makes up. No real evidence will ever come to light. Likely completely false evidence will be made up by the 3 letter agencies and all the deep state.
There are plenty of other people who were there. Someone like Revolver News will probably do some investigative reporting.
I've actually been watching and listening to multiple news sources from "Whitnesses" of what they seen/did happen. It will be interesting to see what the "Official" narrative is. Watch this space!!