A man wielding a large knife held up a Long Island 7-Eleven and demanded cash, police say, and authorities say they are working to determine if there is a link to more than a dozen other recent robberies in the area.
A worker finishing up his shift at the store in Shirley said a man walked in Tuesday morning armed with the knife the length of his elbow to his hand.
The suspect had no mask on, but he demanded cash from the register and the worker complied, police said.
The thief then took off on a motorcycle, according to officials.
It was not immediately clear how much the suspect got away with, but the worker said it was handfuls of cash.
Police said they believe it is the same man behind at least 16 other knife-point robberies on Long Island.
There have been 10 similar robberies in Nassau County and six in Suffolk County, authorities said.
The most recent robbery was April 19 when that suspect, armed with a large knife, threatened a worker at an ice cream shop.