What kind of story is this?
Some guy walked into his office and went up to the front desk and put a bullet on the desk (presumably in front of the security guard) and made a threat that he was going to kill this public figure, but then the guy just turns around and walks out and gets in his car and drives home?
Why was the person uttering threats not detained at the location? Why were no police called and no police investigation launched? Why was he not recorded on any security cameras? Why was his vehicle not recorded in the parking lot? Cops pull finger prints of round cases all the time, how are they not able to identify him or have any further information about this incident other then one tweet with no video or photographic evidence, just a text based allegation?