Investigators hope this will solve a rash of similar muggings in that community.
The woman was attacked around 10 Thursday morning at North Ave. and Leavitt.
A witness called police after she heard the victim screaming.
Police are still looking for a third person in today's mugging.
This comes after several strong-arm robberies in that area that have happened since last December.
Surveillance video shows an attack on a woman walking on Damen.
Police say the offenders target people during late night or early morning hours.