Authorities in Brookings are investigating a sexual assault on the campus of South Dakota State University. According to an email sent out to SDSU students, the assault took place Sunday night in Jackrabbit Village, a residence hall. Police do not believe the suspect was a student at the University, therefore had to be let into Jackrabbit Village. He is described as a white man around 18 to 20 years of age standing 5’6 to 5’9 feet tall. Police are seeking information on the suspect due to a perceived potential for an ongoing threat.