Aaron K. Richardson was 15 when he was shot and killed in Cedar Rapids, Iowa, on the night of September 6, 2015. Known to friends as Arro, he had moved to Iowa from the Chicago area about two years earlier and was remembered for his love of basketball, his artistic talents, and a playful sense of humor.

Police were called to the 300 block of 16th Street SE at about 11:14 p.m. after Aaron, who had been at a friend’s house, was found with a gunshot wound to his abdomen. He ran to a nearby home and collapsed; he was taken to St. Luke’s Hospital and died shortly after surgery. Investigators believed he was targeted and that the killing may have been connected to a rivalry between two groups involved in other shootings.

A 14-year-old freshman, Robert Humbles, was arrested a few days later and charged with Murder in the First Degree; he was held at the Linn County Juvenile Detention Center. Reports state Robert Humbles Jr. was ultimately sentenced to five years of probation for voluntary manslaughter. Aaron’s mother, Loise Brown, and the community held a candlelight vigil to mourn the youngest homicide victim in Cedar Rapids that year.

Did anyone in Cedar Rapids see or hear anything the night Aaron was killed that could help clarify the events?