Police are warning residents about a sexual assault early Monday at a Humboldt Park bus stop.
Police said a woman was either sitting or standing in the bus shelter at Augusta Boulevard and Western Avenue when a man approached her.
The woman told police the suspect attacked her inside the shelter then dragged her into an area between two buildings where he beat and sexually assaulted her.
One neighbor said she heard screams.
"I heard about six to 10 loud screams that were coming from a female," neighbor Marsha Baim said. "There was a loud noise that I heard first then I heard the screams."
Baim said she sent a text to the police department's emergency tip line and, from her apartment window, tried to find out what was happening.
"I heard a male's voice a little bit but I didn't want to poke my head out too much because I didn't want to get killed either," she said.
Police released a vague description of the suspect and is asking for the public's help with more information.
The offender is described as a black man between 19 and 26 years old, standing about five-foot-10 and weighing between 160 and 180 pounds. He was clean shaven, wore a green T-shirt, green shorts, black shoes, a black doo-rag and diamond stud earrings in both ears.
"It's unfortunate we still live in a society where women have this extra layer of things they have to think about," neighbor Sarah Wille said.
Members of the Guardian Angels were planning to canvass the area late Tuesday afternoon.
Anyone with information is asked to call Area Central Bureau of Detectives at 312-747-8380.