It happened at Van Leeuwen Ice Cream Shop in the East Village last month. The suspect placed an order, then threw a rock at a worker's head, demanding money.
The suspect left empty-handed, and police believe he immediately boarded an M2 bus just blocks away.
The man is a suspect in three other robberies in Manhattan over the last month.
ALSO READ | FBI searching for victims in pair of child porn cases, one involving NYPD officer
FBI searching for victims in pair of NY child porn cases
----------
* Get Eyewitness News Delivered
* More Manhattan news
* Send us a news tip
* Download the abc7NY app for breaking news alerts
* Follow us on YouTube
Submit a News Tip