Video shows the attacker swing a hard object at the back of the victim's head.
It happened on April 2 at 6 a.m., as the 25-year-old man was opening the deli on 8th Avenue.
The victim suffered a cut to the back of his head. He was taken to Bellevue hospital in stable condition.
Anyone with information in regard to this incident is asked to call the NYPD's Crime Stoppers Hotline at 1-800-577-TIPS (8477) or for Spanish, 1-888-57-PISTA (74782).
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