Suffolk County police are looking for a man who robbed a Brentwood bank Saturday afternoon.

Police said the man entered the Roslyn Savings Bank at 101 Wicks Rd. at 12:09 p.m. and showed a teller a note demanding cash. After he was given an undisclosed amount of cash, the man fled in an unknown direction, police said.

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The robber was described as about 5-foot-10 to 6-foot with a medium build. Police said he was wearing a black coat with a hood, a black mask and blank pants.

The Pattern Crime Unit is investigating. Anyone with information on this robbery is asked to call anonymously to Crime Stoppers at 800-220-8477.