Nassau County police are investigating the attempted robbery of a Freeport deli and a robbery of a Baldwin gas station -- which happened late Sunday in about a 20-minute span -- as part of a string of related pattern robberies.

A department spokesman said the two events are being investigated as part of a pattern of about 10 robberies in which a thinly built masked gunman, about 5 feet 8 and wearing a black, hooded sweatshirt, enters a 7-Eleven, convenience store or gas station. He flashes a black handgun, demands money and then flees on foot.

The suspect Sunday first tried to rob the Village Express deli on North Main Street in Freeport at 10:46 p.m.

But a customer entered the store and the suspect fled west on Dean Street without getting any cash, police said.

At 11:07 p.m., the same suspect entered the Citgo on Sunrise Highway in Baldwin, selected two items from shelves, went to the counter, displayed a black handgun and demanded money from the register.

Police said the clerk, a man, 45, placed the cash in a black plastic bag, along with the two unspecified items, and said the suspect then fled south on Milburn Avenue.

Investigators believe that same person is responsible for a string of similar robberies that date back to April 15 and include the holdup of an East Meadow delicatessen, as well as robberies of convenience stores and other 7-Elevens in Merrick, Freeport, Valley Stream and West Hempstead in recent weeks.

Police are asking anyone with information regarding the crimes to call Crime Stoppers at 800-244-8477. All calls will remain confidential.

Gregg Sarra sounds off on the Nassau Conference II football matchup between Calhoun at Carey, plus the comeback story of New Hyde Park's Gabriel Peter, an update on the high school fantasy football standings and the plays of the week. Credit: Randee Daddona, Gary Licker, Anthony Santino

Sarra Sounds Off, Season 3, Ep 4: Top football teams in action, fantasy update and plays of the week Gregg Sarra sounds off on the Nassau Conference II football matchup between Calhoun at Carey, plus the comeback story of New Hyde Park's Gabriel Peter, an update on the high school fantasy football standings and the plays of the week.

Gregg Sarra sounds off on the Nassau Conference II football matchup between Calhoun at Carey, plus the comeback story of New Hyde Park's Gabriel Peter, an update on the high school fantasy football standings and the plays of the week. Credit: Randee Daddona, Gary Licker, Anthony Santino

Sarra Sounds Off, Season 3, Ep 4: Top football teams in action, fantasy update and plays of the week Gregg Sarra sounds off on the Nassau Conference II football matchup between Calhoun at Carey, plus the comeback story of New Hyde Park's Gabriel Peter, an update on the high school fantasy football standings and the plays of the week.

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