Mario Juan Simpson Jr., a 20-year-old African American male, was killed on February 1, 2021, in Houston, Texas, after gunfire broke out at 303 Rosamond Street. The shooting happened around 6:25 p.m. at an apartment complex on Houston’s north side, where officers later found Simpson wounded and unresponsive. He was pronounced dead at the scene, leaving investigators to piece together what had happened in the breezeway area where he was discovered.
In the early stages of the
investigation, Houston police did not immediately announce a motive or identify a suspect. The scene offered the outline of a sudden and violent encounter, but not the full story behind it. Simpson’s death became part of a larger concern surrounding violence at the Rosamond Street apartment complex, a location that had drawn attention after multiple serious incidents. For his family, the case was not just another entry in a police report; it was the loss of a young man whose life ended abruptly in a place where he should have been able to walk without being gunned down.
Months later, investigators publicly identified Patrick Donell Greene as the suspect in Simpson’s killing. Greene was charged with murder in the 177th State District Court, but when the charge was first announced in July 2021, he was not in custody. Houston police released his name and sought help locating him, asking the public to provide information through homicide detectives or Crime Stoppers.
Greene was later arrested out of state. Authorities in Prince George’s County, Maryland, took him into custody in March 2022 on a weapons-related matter, and Harris County officials placed a hold on him because of the Houston murder case. After that, he was brought back to Texas to face the charge connected to Simpson’s death. The legal case continued through Harris County, where Greene fought aspects of his detention and bond while awaiting trial.
The case eventually ended with a conviction. Patrick Donell Greene was found guilty of murder in the death of Mario Juan Simpson Jr. and received a 55-year prison sentence. The sentence marked the point where the investigation that began with Simpson found shot at a Houston apartment complex moved into a final courtroom outcome, with the man accused in his killing held accountable by a jury and ordered to spend decades in prison.
