Officials say the man targets women who are alone near the train station, which is scary in broad daylight, according to some commuters. To get to the platform, commuters have to walk up a set of stairs under a dark viaduct.
During the attacks, the man displays a large kitchen knife and demands the women hand over their belongings. One woman was sexually assaulted.
"(I'm) scared for me to get out the train," said
The suspect is described as a black male, 20-25 years old, 5'8"-510, 150-170 pounds. He has brown eyes, black hair, a medium complexion and his teeth are crooked on the top of his mouth. The suspect was seen wearing a black ski cap, dark coat, dark pants and Timberland boots or white gym shoes, according to police.
"At first, I thought it was kind of safe, but a woman getting attacked? I walk my kids every day to school. We have to be more careful," said Lesya Lee, commuter. "I always have my hood on because it's cold. You can't see behind you."
The Church of God, which is located near the Metra train stop, has put its 18,000 members on alert.
"We have a lot of activity and a lot of individuals that come back when they get off work in the evening. We're concerned about their safety," said Donnelly Miles, Apostolic Church of God.
The church has an elaborate security system. Detectives looked at the surveillance video but they could not see anything. Those cameras are too far away.