An 18-year-old woman was on the sidewalk with her baby just before 12:25 p.m. in the 1100-block of West Granville Avenue in Edgewater when the incident took place, CPD said.
The suspect took the baby girl from the woman and ran off, police said.
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The suspect was later taken into custody nearby, in the 1000-block of West Glenlake Avenue, police said.
Charges are pending against the suspect, police said.
This is a developing story; check back with ABC7 Chicago for updates.