According to information provided by the University of Chicago Police Department, the robberies occurred during the early morning hours of Sunday, June 10, 2012.
The first incident happened around 2:40 a.m., between the 5300 and 5400 block of South Dorchester Avenue.
A man approached two women on the street, implied he had a weapon, and stole their property, said police.
About an hour later and a few blocks south, four more women were robbed in a similar fashion.
Citing police records, the second robbery occurred around 3:55 a.m. on East 52nd Street, between South Kimbark and Woodlawn Avenues.
Again, a male offender implied he had a weapon and stole women's property, said police.
At the time of this report, the mugger was still at large.