University officials say flyers and stickers from the group Identity Evropa were found on campus property on Wednesday.
In a statement, UMass says it "denounces these acts of hate and intimidation" and that university police are investigating.
The Southern Poverty Law Center lists Identity Evropa as a white nationalist hate group.
Stickers linked to the group were found on UMass campus in 2017, and members of the group acknowledged distributing its materials online at colleges and universities throughout western Massachusetts.
University officials say UMass Amherst supports diversity, inclusion and equity and it rejects anything associated with white nationalism.
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