Nykea Aldridge, 32, was pushing her newborn in a stroller after registering children at Dulles School of Excellence when gunfire erupted on the 6300 block of South Calumet in Parkway Gardens on August 26, 2016, around 3:30 p.m. She was struck in the head and arm and pronounced dead at 4:15 p.m. The baby was uninjured. Police said Aldridge was not the intended target; two men opened fire at a third man near her and a companion.

Detectives focused within days on brothers Derren Sorrells, 22, and Darwin Sorrells Jr., 26, identified by police as gang members who were on parole. Authorities alleged the brothers fired at a man they believed belonged to a rival crew, missed him, and killed Aldridge. Prosecutors said Derren later admitted in a recorded statement that he shot at a 25-year-old man.

Both brothers were arrested and charged with first-degree murder and attempted first-degree murder; one also faced a misdemeanor trespass charge. In January 2019 Derren Sorrells pleaded guilty to Aldridge’s murder and received a 27-year prison sentence; proceedings against Darwin Sorrells Jr. continued in Cook County court.