A police oversight agency in Chicago has found that a police sergeant unjustifiably used deadly force when he shot an unarmed teen who had mental disabilities in 2017, the Chicago Tribune reports. The Civilian Office of Police Accountability (COPA) concluded that Sgt. Khalil Muhammad was “objectively unreasonable” when he shot then-18-year-old Ricardo “Ricky” Hayes in an off-duty incident, wounding the teenager. After initially recommending that Muhammad be suspended for 90 days without pay over the incident, the watchdog has now recommended that the suspension be doubled to six months, the Tribune reports. But some are questioning why Muhammad hasn’t faced stricter punishment. Attorney Torreya Hamilton, who represents a former detective who claimed he was penalized after refusing to back up Muhammad’s version of events on the shooting, was outraged. “I don’t want this guy on the street with a gun, because he shot at Ricardo Hayes for no reason,” Hamilton was quoted as telling the Tribune.