"This incident is deeply disturbing and is hurtful to our university community."
The rope was hung over the memorial to James Meredith, the school's first black student.
The University of Delaware says three items found hanging from a tree on campus were not nooses, but remnants of paper lanterns left over from an event.
Sheriff Scott Franklin of Jena says he is trying to rid his community of drugs. Critics say he is pursuing a vendetta against the town's Black community.