Rich, 27, was gunned down on a Beltway sidewalk in the early morning hours of July 10, 2016 – spawning a slew of false right-wing conspiracy theories.
He died about 90-minutes after two bullets were blasted into his back in what police described as a botched street corner robbery that has yet to yield any suspects.
“It has been determined that the records you seek are part of an open investigation,” Kimberly Robinson, the department’s FOIA specialist, told RadarOnline.com in a letter rejecting details on the case.
“The release of any records could interfere with enforcement proceedings by revealing the direction and pace of the investigation,” she added.
“It could lead to attempts to destroy or alter evidence, reveal information about potential witnesses who could then be subjected to intimidation as part of an effort to frustrate future investigative activities, or could place witnesses in danger.”