Police are investigating a bias incident after a swastika and graffiti were found painted on the back wall of the U.S. Post Office on Mollineaux Place in Roosevelt Sunday.

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Nassau County police declined to elaborate on the message found painted in white paint along with the swastika, calling it only "a racially bias statement." Police said investigators believe the incident occurred between 2 a.m. and 7 a.m.

Anyone with information regarding the incident is being asked to call Crime Stoppers at 1-800-244-TIPS. All calls will remain confidential, police said.