Nassau County police are trying to determine who spray-painted graffiti — including swastikas — in a Stewart Manor neighborhood early Tuesday.

Police said they found one swastika painted on the sidewalk in front of a Stewart Avenue house, and that smiley faces and other swastikas were painted on nearby trees and utility poles.

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Green paint was used for all the graffiti, police said.

Anyone with more information can call Crime Stoppers at 800-244-8477. All information will be kept confidential.