Towson University officials said Wednesday they believe the alleged video recording in a campus pool was limited to the locker room for the women's swimming and diving team.
On Friday, team members found a smartphone in their locker room at Burdick Hall, and officials said the device may have recorded them.
The university has been conducting an investigation, but officials have offered little additional information. In a statement Wednesday, the university said "there was nothing to suggest that the smartphone was used to record in any other location than the women's swimming and diving team locker room."
The team locker room is not open to the public.
"This locker room has restricted access and we have taken steps to ensure that its security is being maintained," the university said.
The university has offered counseling to team members.
The men's and women's swimming and diving teams are in the midst of their competition season. The next competition is Oct. 30 at George Mason University in Fairfax, Va.
The teams are led by coach Pat Mead and his wife, Maureen, who coaches the diving team.