CHICAGO (CBS) — Chicago Police are alerting residents of the Chatham neighborhood after a pair of armed robberies in the middle of the afternoon.

In the first robbery, a man with a black handgun robbed lawn maintenance workers in the 8900 block of South Cottage Grove. The suspect fled southbound on foot. That robbery happened on June 22 at 2:20 p.m.

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Five days later at the same time of day, the suspect again approached lawn workers and demanded their belongings. This time, the suspect fled in a red Chevy Malibu. The robbery happened near the location of the first one, in the 700 block of East 88th Street.

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The suspect is described as a black male, 18-25 years old, 5’8″-5’10”, 180-185 pounds.

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Police did not say what was stolen.