Isaiah Armstrong, 24, was shot and killed on September 18, 2020, in the South Chicago neighborhood. He was found unresponsive with a gunshot wound to the head about 5:40 p.m. in the 8400 block of South Escanaba Avenue; the Cook County medical examiner confirmed his identity and ruled the death a homicide after an autopsy the next day. Armstrong lived in the Calumet Heights area of Chicago.

Police and detectives from Area Two investigated, but no suspects had been apprehended and no arrests were reported. His killing was one of several fatal shootings that weekend in the city, and the family and community called for justice as detectives continued to seek leads. Few public details about the investigation have been released.

If anyone has information about what happened near South Escanaba Avenue on September 18, 2020, please come forward to investigators.