The Brief Two men robbed a passenger on a CTA bus in the 2700 block of W. Madison Street in Garfield Park around 10:06 a.m. on Sept. 9, according to Chicago police. Authorities urge riders to stay alert, report incidents immediately, and contact Public Transportation Detectives at 312-745-4447 or CPDTIP.com (reference #JJ411977) with any information on this incident. Chicago Police are warning of a robbery on a CTA bus in the Garfield Park neighborhood. What we know:Around 10:06 a.m. on Sept. 9, two Black men robbed a victim on board a CTA bus in the 2700 block of W. Madison Street. If anyone has any information on this incident, they could contact Public Transportation Detectives at 312-745-4447 or submit an anonymous tip at CPDTIP.com and use reference #JJ411977.