FRAMINGHAM, Mass. (CBS/AP) — A Massachusetts university has asked the FBI to help investigate a series of racist notes left on campus was written by the same person.

The Boston Globe reports that five messages with racial slurs targeting black students have been found at Framingham State University since October.

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Campus police Chief Brad Medeiros says handwriting evidence from the notes has been turned over the FBI.

Racist note found at Framingham State University (Photo Courtesy: Carlos Barbosa Jr.)

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The most recent message was found Friday by freshman Carlos Barbosa Jr. He says it’s the second racist note he’s found this year and the school needs to take a tougher tack against harassment.

A university spokesman says administrators are “disappointed and disgusted” by the notes. He says the school is offering a $1,000 reward for information that identifies the person responsible for any of the messages.

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(© Copyright 2017 CBS Broadcasting Inc. All Rights Reserved. The Associated Press contributed to this report.)