While a sexual assault investigation is still ongoing, Vermillion Captain Chad Passick said there is no longer any danger to the USD campus or the community.
"We learned this was not an incident of a stranger attack, so we feel comfortable saying there isn't a risk to the community at this time," he said.
USD's Department of Public Safety received a call at 4:32 a.m. on Sunday about an incident of a sexual assault at Richardson Hall. DPS then turned the investigation over to the Vermillion Police Department.
Passick said the VPD does have a suspect in the investigation.
"At this point, we have somebody who has been named, or alleged to be a suspect," he said. "But we don't have anyone that we would call a suspect in the crime."
Passick said he doesn't know if alcohol was involved, or what kind of interaction took place.
"That's all part of the investigation, determining the types of interaction. Anytime you investigate that, you determine what happened during any possible interaction," he said.