The four people entered a deli on Marcus Garvey Boulevard in Bedford-Stuyvesant dressed in dark clothing with NYPD logos.
The group zip-tied a 48-year-old customer, a 68-year-old employee, and a 40-year-old employee and forced them to the ground at gunpoint.
The robbers took off with a bag with items from the location and fled in a dark colored van.
No one was injured.
There are no arrests, and the investigation is ongoing.
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