Nassau detectives are searching for a masked man who they said tried to rob a Valley Stream bank Tuesday afternoon.

Robbery Squad detectives said a man entered the Chase Bank at 235 Rockaway Ave. at 4:34 p.m. and gave a teller a note demanding cash. The teller refused to comply and the suspect fled on west on West Hawthorne Avenue without any money, police said.

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Police said there were five employees and no customers in the bank at the time. The suspect was described as in his mid-20s, standing 5 feet, 6 inches to 5 feet, 8 inches tall with a thin build, wearing a black mask, black jacket and black pants, police said.

Detectives ask anyone with information to contact Nassau County Crime Stoppers at 800-244-TIPS. All callers will remain anonymous.