CHICAGO (WLS) -- Police issued an alert Saturday after a string of robberies were reported near the University of Chicago.
The robberies occurred between 9:50 and 11:10 p.m. Saturday in the 5600-block of South Dorcester Avenue, 5400-block of South Kenwood Avenue and the 5400-block of South Woodlawn Chicago.
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The victims were approached by the suspect who implied they had a weapon and then demanded cash, according to police.
Each time the suspect fled the scene on foot.
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The fourth robbery was subdued when a witness shouted at the suspect, which caused them to flee west on 55th Street.
The University of Chicago police are investigating the robberies; no physical description was released by police.