All seven robberies happened in a two-week span, and in a couple of cases, the thieves hit the same location twice.
The group attacked a delivery worker on 60 Cooper Street in inwood and began attacking. In this case, they got away with $200. Remarkably, the delivery worker was not seriously hurt.
The other six incidents all played out in a similar fashion.
The individuals are described as four males, approximately 16 to 20 years of age.
Anyone with information is asked to call police.
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