Authorities say the man held up a Dunkin Donuts in Teaneck at gunpoint on Sunday night.
Two employees were in the store at the Walgreens shopping plaza on Teaneck Road at 11:47 p.m. when the man walked in, showed the gun and demanded cash.
The lone robber was wearing a gray hoodie, a black jacket and sunglasses and holding a black handgun in his right hand. He is approximately 5-foot-8.
The masked suspect fled the scene with an undetermined amount of cash.
Anyone with information is asked to call police.