NEW YORK (CBSNewYork) — The New York Police Department and FBI are increasing their efforts to nab one of the city’s most-wanted bank robbers responsible for at least six armed heists over the past seven months.

The suspect, dubbed the “Snub-Nose Bandit” — because his weapon of choice is a silver, snub-nosed revolver — first held up a Dunkin Donuts in Greenpoint on Sept. 25, officials said.

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In that case, police said the suspect fired off a bullet into a tray of doughnuts while demanding cash from the register.

Police said the suspect is also held up a Capitol One Bank in Brooklyn on Oct. 18, an HSBC Bank in Queens on Dec. 7, a Sovereign Bank in Jackson Heights on Jan. 6 and a Chas Bank on Hillside Avenue in Queens on Jan 28.

Police said in the December incident, the suspect fired one shot into the ceiling. No injuries were reported.

In the latest incident, officials said the suspect walked into an Apple Bank on Flushing Avenue in Brooklyn on March 2 and shoved a customer aside before demanding cash from the teller at gun point.

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The FBI believes the suspect is using livery cabs to get to and from the robberies.

The suspect is described as a black or Hispanic male, approximately 35-years-old, roughly 5-feet-5-inches to 5-feet-7-inches tall and weighing between 150 to 190 pounds.

The suspect should be considered armed and dangerous.

“Anytime someone fires a round into a bank ceiling, behind a counter in a coffee shop, that’s a dangerous situation and we’re trying to do everything we can to solicit information from the public,” FBI spokesman Peter Donald told 1010 WINS on Friday.

The FBI is offering a “significant reward” for information in the case.

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Anyone with information is asked to call the FBI at 212-384-1000 or the Crime Stoppers hotline at 1-800-577-TIPS.