Gregory Callahan, 46, was killed in a shooting after an argument on July 23, 2014, in the Lake Highlands area of Dallas, Texas. Authorities determined the shooting was a targeted attack tied to that dispute rather than a random act of violence.

Police investigation identified suspects and they were charged with multiple offenses, including murder. The suspects were arraigned and the case moved into litigation, with trial proceedings examining the events that led to the shooting.

Callahan’s death affected his family and the local community and prompted renewed calls for measures to curb violent incidents. Does anyone have information about the Lake Highlands neighborhood or the people involved that could shed more light on what happened that night?