TERRE HAUTE, Ind. (WTWO) — Investigators are searching for answers after a series of racist messages were found on the campus of Indiana State University.

In a statement from the ISU Police Department, officials say they are investigating a report of a bias-related incident in a residence hall on Tuesday, between the hours of 4:45 and 5:20 p.m.

An unknown person wrote a derogatory message that contained a racial term on a message board located on the door to a residence. The occupants of the residence were not home at the time of the incident.

While police were investigating this incident, a second incident occurred between 2:50 and 3:10 a.m.

On Wednesday, a second note with threatening undertones and containing a racial term was left outside the same residence door. A Residential Life hall staff member was on the floor and did not see anyone suspicious on the floor.

Indiana State University takes all incidents of discrimination and harassment seriously, and both of these incidents remain under investigation.

University officials encourage reporting any and all suspicious persons and incidents to the police immediately. If anyone on Indiana State’s campus feels unsafe at any time, he or she should contact the ISU Police immediately at 812-237-5555.

For more information on campus crime and safety, go to indstate.edu/pubsafety