Osmen Mar, an 18-year-old from Houston, Texas, was shot and killed on January 28, 2019, in West Houston while visiting his girlfriend. The girlfriend called her ex-boyfriend, 23-year-old Edwin Isaac Aguila, who arrived, produced a gun and fired a single shot that struck Mar in the head. Mar was pronounced dead later that day.

Aguila was arrested at the scene and charged with murder in the 232nd State District Court. Investigators described the incident as a domestic dispute that escalated into deadly violence and reported Aguila had driven to the location intending to confront Mar.

Did anyone in West Houston at the time see or hear anything that could shed more light on what happened that night?