Police issued an alert after a pair of robberies that occurred on the same block just two days apart in the Grand Boulevard neighborhood.
In each incident, five men attack a victim and take property, according to a statement from Chicago Police.
The first robbery occurred about 7:30 p.m. on June 1 in the 4800 block of South Indiana. Two days later, at 11:45 p.m., a similar robbery was reported in the same area, police said.
Police said the five suspects are about 25 to 30 years of age.
Further details were not available.