Looks like the shooter who had no ID had sanded off his finger prints from the tips of his fingers

POTUS "The TRUTH is out there"

Thursday, 28 June 2018 17:25 - No additional POTUS travel outside the White House secure area is expected for the remainder of today and tonight. Shine light on the Left - "The TRUTH is out there"

https://twitter.com/POTUS_Schedule/status/1012462508366540801