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Chicago police on Thursday released surveillance photos of a teenage boy suspected of three robberies in recent weeks on the Near North Side.

The teen has approached people on the street, shown a handgun and demanded people’s belongings, police said in an alert earlier this week.

The robber has struck at least three times:

About 7:30 a.m. Friday in the 300 block of North State Street;

About 11 a.m. Sept. 29 in the first block of West Hubbard Street, just west of State Street;

About 5 p.m. Sept. 23 in the 100 block of West Chestnut Street.

Police released surveillance photos of the boy suspected in the robberies wearing a dark blue University of Illinois sweatshirt, two of them in a 7-Eleven store on North State Street. The robber is described as a black boy, 15 to 16 years old, 5-foot-5 to 5-foot-6 and weighing 145 to 155 pounds.

Anyone with information about the robber is asked to call Area Central detectives at 312-747-8382.