Duke University officials say a student has admitted to hanging a noose in a tree and is no longer on campus.

At a news conference Thursday afternoon, school spokesman Michael Schoenfeld said the school would not release the name of the student who admitted to hanging the noose, found early Wednesday in a plaza area on campus. He said the student will be subject to Duke's student conduct process and that an investigation continues to find out if others were involved.

The school also is working with state and federal officials about potential criminal violations.