On Nov. 3, at approximately 4:05 p.m., police officers were dispatched to the 1700 block of Monroe Street in reference to a female resident, 70 years old, who was approached in the rear of her residence by a male subject who was armed with a gun and demanded her purse, said Commander Joe Dugan of the Evanston Police Department. A second man exited a vehicle that pulled up in the alley behind the residence and also began to approach the victim, he said.

The victim began to scream and both subjects reentered the vehicle, which fled westbound in the alley. Evanston police officers responding to the area observed the vehicle, which refused to stop when the officers attempted to conduct a traffic stop.  The vehicle began to flee southbound on Ridge Avenue at which time the vehicle pursuit was terminated. The vehicle entered Chicago, and was later located in the area of Pratt Boulevard and the lakefront, where four occupants exited and attempted to flee on foot. Three of the subjects were apprehended by the Chicago Police Department and turned over to the Evanston Police Department for further investigation. The fourth subject who was described as wearing all red, was not located. The vehicle the subjects were driving was reported stolen out of Chicago. A pellet gun that resembles a real handgun was recovered from inside the vehicle, said the Commander. 

The three subjects who were taken into custody were all male, 15, 16 and 17 years of age, said the Commander. 

The 15 year old is a resident of Calumet City, and the other two are residents of Chicago. All three juveniles were charged with one count each of Aggravated Robbery, said the Commander. Police are continuing their investigation.