DeMarco A. Irby Jr. was a 15-year-old from Peoria, Illinois, who died of injuries sustained in a violent incident on September 11, 2015, at OSF Saint Francis Medical Center. Born January 6, 2000, to DeMarco A. Irby Sr. and Suzette Smolley, he was remembered for a vibrant personality and interests in basketball, video games, and dancing.

The Peoria Police Department investigated the incident, and the community held vigils and memorials while seeking information and justice. Reports emphasize the case as a painful example of youth violence and the ongoing search for answers.

If anyone knew DeMarco or has information about the events leading to his death, please share what you can.