Brent Randall, 44, was shot and killed on February 2, 2017, in Dallas, Texas. He was waiting outside his workplace on the 1800 block of Mockingbird Lane early that morning when an unknown assailant fatally shot him. Police described the incident as an attempted robbery and said a coworker with Randall identified the shooter as a Latin male with straight hair wearing a red bandana over his face.

Investigators linked that description to a suspect they believed was involved in a series of aggravated robberies in the area that morning, but no arrests were made immediately following the shooting and the perpetrator remained at large. Randall’s mother, Jacqueline Mouton, later pursued legal action alleging the university where he was a student failed to provide adequate security; the Court of Appeals of Texas dismissed the claims against the university in Texas Southern University v. Mouton.

Who knew Brent or was in that part of Mockingbird Lane the morning of February 2, 2017, and might have seen something useful?