Police are searching for a person who allegedly sprayed at least three people with an unknown substance on the upper platform of the CTA Blue Line station at 711 Desplaines Ave. on Oct. 24.

Officers were dispatched to the scene around 5:30 p.m. and encountered a man on the lower level “who was stumbling around, holding his eyes and stated he just got sprayed in the face by some guy,” according to a police report.

A second man then also came to the lower level and told officers he had been pepper sprayed “by some guy,” and that his eyes were burning.

A third alleged victim was discovered on the upper level. That person said they were on the train when someone started spraying people in the face.

Officers began to search the train cars for the suspect but were informed by a CTA employee that the suspect had left the station on an outbound train prior to police arriving on scene.

Chicago Police later searched the train for the suspect, but he was not located.

The suspect is described as a man, 40 to 50 years old, between 5-foot-5 and 5-foot-8, with a medium build. He was wearing a black jacket and gray pajama pants with black ghosts on them. The suspect was also wearing a gray backpack.

One of the three victims was taken to the hospital for treatment.

This information was obtained from police reports filed by the Forest Park Police Department. Unless otherwise indicated, anybody named in these reports has only been charged with a crime. These cases have not been adjudicated.