Quentin Tillison, 37, of Maywood, Illinois, was fatally shot in the parking lot of a Walgreens at Roselle Road and Wise Road in Schaumburg on August 14, 2017, at about 5:19 p.m. He was shot in the chest, ran into traffic, collapsed, and was taken to Advocate Lutheran General Hospital in Park Ridge, where he died early August 15, 2017. The Cook County medical examiner confirmed the death.

Investigators determined the shooting was not random and that Tillison and the shooter knew each other. Witnesses saw two suspects flee in a white GMC SUV: a 35-year-old African American male in a blue T-shirt armed with a handgun, and an African American female with long black hair with red tips. Oliver L. Rhone, 37, was later identified as the primary suspect; witnesses reported a long-standing feud between Rhone and Tillison. According to accounts, the men exchanged words in the parking lot and Rhone allegedly shot Tillison as he turned away. Tillison reportedly said it was Oliver before he died.

Rhone turned himself in with his attorney and was charged with first-degree murder; his defense asserted self-defense and referenced prior threats and an alleged stabbing. No weapon was found on Tillison and prosecutors cited witness testimony and surveillance video in support of the charge. Is there anyone who remembers seeing activity in that Walgreens parking lot that evening or who can provide information about the SUV or the two people who fled?