Chicago Police Supt. Eddie Johnson — who fell ill and lost his balance during a news conference at a South Side police station on Friday — needs a kidney transplant, sources told the Chicago Sun-Times .
Anthony Guglielmi, chief spokesman for the police department, tweeted that Johnson was expected to be released from the hospital sometime Friday. "He is fine & in great spirits," Guglielmi wrote. "Incident unrelated to a longstanding kidney issue."