The Fresno State police department is investigating reports of possible vandalism of a professor’s “Black Lives Matter” posters.

The incident, which happened in the Social Sciences Building, was kept mostly silent until Thursday. University President Dr. Joseph Castro emailed a message to the campus in which he highlighted the incident.

“Material on her private bulletin board, located in a hallway outside her office, was repeatedly vandalized,” according to the message from Castro. Chair of the Academic Senate Thomas Holyoke and Associated Students Inc President Demi Wack were included in the message.

The campus police department is investigating the incident, according to the university and the professor. The professor declined to give a statement to The Collegian on the incident because the investigation is ongoing and she did not want to draw attention from the public.

Police spokeswoman Amy Luna said she could not comment on the open investigation. Anyone with information on possible vandalism incidents is encouraged to report them anonymously to [email protected] or by texting 559-664-3204.

In the email to the campus, Castro noted that incidents like these have happened before, but discouraged the campus community from curtailing expression freedoms.

Last April, a student was accused of taking down pro-life posters from bulletin boards. This summer, a professor reported that art made by students in the Summer Arts Program was repeatedly vandalized.

The latest reports of vandalism come on the heels of a First Amendment forum held by the university’s Institute for Media and Public Trust.