On the morning of January 20, 2025, a shooting at a home on Commonwealth Avenue in Duquesne, Pennsylvania, left 30-year-old Sean Johnson Jr. dead. First responders found Johnson in the living room; he had sustained a gunshot wound to the head. Another victim, 39-year-old Catherine Lawing, was found at the base of the stairs and was critically wounded; she later died in hospital from a gunshot wound to the head.

Witnesses told investigators an argument occurred that morning between Johnson and 28-year-old Ishmeil Muhammad, reportedly tied to a long‑running dispute over attraction to the same woman. Allegheny County Police Homicide Unit investigators used witness statements, surveillance video and phone records to identify Muhammad as the primary suspect. Detectives later recovered a ghost gun in a nearby sewer grate.

In March 2025 Muhammad was arrested and charged with two counts of criminal homicide, illegal possession of a firearm, carrying a firearm without a license, and tampering with evidence; he is being held in the Allegheny County Jail awaiting a preliminary hearing. Did anyone in Duquesne see or hear anything that morning that could help investigators?