Georgia Southern University police are investigating three incidents of reported sexual battery involving an unknown male who made "unwanted physical contact" with females on a university transit bus. University officials issued a "timely warning" on its website (http://bf.georgiasouthern.edu/publicsafety/) Monday after a woman reported being victimized, according to GS police incident reports. The statement addressed "incidents of unwelcome physical contact with females by an unknown male on GS transit buses."