A masked man stole cash from a TD Bank branch office in Port Jefferson on Friday night, Suffolk County police said.
The robbery occurred shortly before 7 p.m. at the bank at 86 W. Nesconset Highway, police said in a statement.
The suspect demanded cash from an employee, and a teller complied by giving him money from the drawer, police said.
The suspect left the bank on foot. He wore a mask and dark clothes, police said.
Detectives urge anyone with information to call the Major Case Unit at 631-852-6555 or Crime Stoppers anonymously at 800-220-TIPS.