Just before the last day of school, vandals hit East Lansing High School with spray painted messages.
The graffiti was sprayed on in black and white paint and said, "Seniors 2014" and "2014" on many locations outside of the building.
The East Lansing Police Department's school resource office and the Detective Bureau worked with school security in order to identify possible suspects.
Four East Lansing High School seniors, who graduated last weekend, were identified as suspects; however, police say they believe 10 or more people were involved in total.
The investigation is still ongoing.