A shooting incident on a CTA Red Line train in Chicago's Uptown neighborhood halted service on Wednesday morning, with police receiving reports of a disturbance at 8:46 a.m. near the Argyle station. One person was shot in the arm and has been hospitalized but is expected to recover, while a suspect has been taken into custody and a firearm was recovered. The Chicago Transit Authority (CTA) suspended train operations in both directions, leading to major delays, and provided shuttle bus services between the Howard and Belmont stations. Service was resumed at 9:53 a.m. after an hour-long disruption. Passengers were advised to consider alternative transport options during the outage. Further details from the police regarding the incident are still pending.