Tulsa police are investigating three sexual assaults on the University of Tulsa campus.
Officers said the suspect is a student already behind bars on a complaint of sexual battery.
Police said 18-year-old Zach Martin reportedly admitted to groping one victim and investigators said Martin could be connected to as many as two more open sexual assault investigations.
The university is telling students, faculty and staff that their health and safety is top priority.
A victim reportedly told police she was asleep on a couch in a fraternity house when Martin began to touch her and undress her.
"And then at some point it reached the level of where she goes 'oh no it's got to stop' and that's when she got up and ran," said Adam Ashley, Tulsa Police Department spokesman.
She called police and TU security quickly found Martin on campus.
"We said 'hey we're looking for this guy' and bam, they went and found him and brought him to us," Ashley said.
Police believe Martin could also be responsible for other sexual assaults on campus with investigations pending.
"The reason some are pending is because of backlog of cases or that the victim may or may not want to continue with it," Ashley said.
Detectives will now do follow-up interviews and submit that information to the district attorney's office.
"They may file single charges or multiple charges on him with multiple victims. It just depends on what the detectives get and how cooperative he is," Ashley said.
As the investigation unfolds, TU released a campus security alert saying, in part,
"University administrators will continue to push for increased education and awareness on this issue."
Police are urging students to come forward if they have had something similar happen with Martin.
TU said he has been dismissed by the university.