A 21-year-old man has been reported missing after last being seen on a CTA Brown Line train in Chicago, authorities said Monday. Jack Yee, was last spotted heading northbound from the Paulina station on June 1st, according to the Chicago Police Department. The missing person bulletin described Yee as a white male, standing 5 feet 8 inches tall, weighing around 160 pounds, with brown eyes and black hair.

The Chicago Police shared that he was wearing a green muscle shirt, black shorts, and a white bucket hat at the time of his disappearance. Officials urge anyone with information to come forward and assist in locating the young man. The incident has been registered under case number JH289204, and the search is being coordinated by the Area Five SVU, they added.

Yee's last known whereabouts place him in the 4400 block of North Monticello Ave. His absence has triggered a concerned response from both local authorities and the community, given the mystery enveloping the circumstances of his disappearance. The Chicago Police Department's appeal for public assistance underscores the urgency felt in the hours and days following a person's disappearance, especially in a city where the ebb and flow of countless lives can easily obscure the plight of one.

The police have designated the bulletin as confidential, although it has been publicly circulated to garner aid from citizens. Persons who may have seen Jack Yee or have any information pertaining to his current location are strongly encouraged to contact Area Five SVU at (312)746-6554. The case continues to develop; however, no further details regarding Yee's intended destination or his state at the time he went missing, have been disclosed by the authorities.