Been a year. Unfortunately, this has been buried deeper than Hillary’s sagging boobs during her visit to the Grand Canyon. Why Trump hasn’t made this a priority? That’s the big question - and “deep state” is no longer a valid answer.
It hasn’t been a priority because it was an open and shut case.
The default is not to spend lots of resources when the perp was shot during the assault and killed.
That may have been a mistake, because we life in an age where we have all learned to distrust most everything.