Roxbury Police Chief Mark Noll says the fliers were left on various streets in the northwestern New Jersey township by a white supremacist group called the League of American Patriots.
Noll says the incident is being investigated as littering, which carries a potential $500 fine, and not as a hate crime, because the group did not target certain homes.
E-mail and phone messages to the group were not immediately returned Tuesday.
News of the fliers were first reported Monday by The Star-Ledger of Newark.