Robbery and Aggravated Assault with Knife on CTA Green Line

Summary: A robbery in progress was reported on the CTA Green Line train at or near 154 North Damen Avenue, Chicago, Illinois. The offender, described as a Black male wearing a black hoodie with 'Gallery Department' written on it and a baseball cap, used a knife to rob another male. The incident occurred on board train car number 5158. The train was tracked as it stopped at various stations, including Damen, Lake, Kedzie, and California. The offender exited the train at Kedzie station, while the victim remained on board. Police coordinated with CTA and responded to the scene. The incident was later classified as an aggravated assault with a knife due to the lack of a robbery victim coming forward, though there was mention of a possible second victim who exited at California. The event was assigned RD number JJ430656.