Police said the man pretends to be a woman, and then meets up with female victims in the South Shore neighborhood. He has threatened each of his victims with a gun, and one with a knife, before taking them to another location and assaulting them. He also stole some of the victims' phones.
Police said there have been at least four assaults in two locations since March.
The first assault happened on March 21 in the 7400 block of South Euclid Avenue between 2 a.m. and 3 a.m.
Another assault happened in the 1900 block of East 73rd Place at 12:15 a.m. on May 8, followed by another on May 21 at about 8 a.m. in the 1900 block of East 73rd Place.
The latest assault happened on Saturday at about 3 a.m., again in the 1900 block of East 73rd Place.
Police asked anyone with information to contact them at 312-747-8380.
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