Police said the victims were attacked by one to three people on the train or just after leaving the train or bus station. The victims were battered and had their property taken, police said.
The robberies occurred at 9 p.m. on Feb. 6 in the 2100-block of South Pulaski Road; at 1:13 p.m. last Thursday in the 2000-block of South Pulaski Road and at 12:10 a.m. Tuesday in the 1900-block of South Pulaski Road.
Anyone with information is asked to contact at (312) 747-8380.