CHICAGO -- Police are warning of robberies in pedestrian tunnels between CTA Red and Blue line trains.
Police have released surveillance pictures of four of the five suspects believed to be between 18 and 25 years old.
There have been three separate robberies over the last month.
The first was in the 100 block of South State Street on Jan. 30, then again on Feb. 13 in the 200 block of State St. Another robbery happened on Feb. 14 in the 200 block of South Dearborn. The most recent was last Wednesday evening near Dearborn and Adams.
All three robberies happened in the same general area during the morning or evening rush hours.
Police said five men surrounded the victims, showed a handgun and robbed the victims. They have also hit and kicked victims.
Police are urging CTA riders to be aware of their surroundings and report anything suspicious.
Anyone with information about the robbers is asked to call Area Central detectives at 312-747-8384.