An attempted aggravated robbery on Monroe Street turned into a car chase and concluded with three teenagers arrested by Chicago police on Thursday.

At about 4 p.m., officers were dispatched to the 1700 block of Monroe Street after a 70-year-old woman was approached in her backyard by an armed male subject demanding her purse, police said. A second subject drove up, but after the woman began to scream, the subjects fled westbound in the vehicle, according to a news release.

Evanston police attempted to stop the vehicle on Ridge Avenue but terminated the pursuit after the subjects continued to flee south into Chicago. The subjects parked in the area of Pratt Boulevard and the lakefront to attempt to flee on foot, and Chicago police arrested three subjects and turned them over to the EPD.

The three subjects taken into custody were 15, 16 and 17 years-old, and the vehicle they drove was reported stolen from Chicago. The 15-year-old is a resident of Calumet City, Illinois, and the other two subjects are Chicago residents. All three were each charged with one count of aggravated robbery.

A fourth subject escaped the scene, and a pellet gun resembling a firearm was found in the vehicle.

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