Highland Park police are searching for two persons of interest following a shooting incident that left a 30-year-old man in critical condition. The incident occurred Monday night, approximately at 8 p.m., in the 300 block of Walker Avenue, situated on the border of Highland Park and neighboring communities Highwood and Fort Sheridan. Upon arrival, officers placed residents in the immediate area under a shelter-in-place order, urging them to avoid the area and not open doors to unexpected visitors. The order was lifted around 10:40 p.m. as authorities believed the individuals involved had fled the scene. The victim was transported to a nearby hospital and was reported to be in critical condition, though a city update on Tuesday morning indicated his condition was improving. Preliminary investigations suggest the shooting occurred between individuals who knew each other. Police have identified two persons of interest who were seen conversing with the victim prior to the shooting. Authorities describe these individuals as witnesses or potential suspects and are actively seeking their location. The investigation has drawn a significant response from local law enforcement and the Lake County Major Crimes Task Force, utilizing drones and canines to track the suspects. Police officers remain in the area as the investigation continues. Residents are urged to contact 911 if they have any information regarding the whereabouts of the two persons of interest or if they observe any suspicious activity. The case remains open and active as detectives work to locate the individuals for questioning and further investigation.