Robert Robbins, 47, was shot and killed in Oceanside, California, in the early hours of August 30, 2012. Officers arrived about 12:20 a.m. after reports of a woman screaming for help at the intersection of Calle Solimar and Calle Mariposa. Robbins was found lying in a driveway and was pronounced dead at the scene. His 49-year-old girlfriend, Lisa Badgett, was wounded and taken to hospital; she was expected to survive.

Police arrested 20-year-old neighbor Diego Arturo Martinez after obtaining a search warrant and surrounding his home. Officers recovered a rifle during the search; reports did not make clear whether it was the weapon used. Martinez was charged with first-degree murder and attempted first-degree murder. The case later produced a guilty plea to voluntary manslaughter and a 21-year state prison sentence. Court testimony described a contentious relationship between Martinez and Robbins and said an argument that night escalated; Martinez testified he fired claiming self-defense while the prosecution argued reckless disregard for human life.

Did anyone nearby hear or see the argument that night, or have information about the relationship between the neighbors?