Swanson, 67, was indicted on one count of gross sexual imposition, a fourth-degree felony. He faces up to 18 months on the charge, if convicted.
The charge was presented to the grand jury on Monday. Grand jury proceedings are not open to the public.
The case will be heard before Knox County Common Pleas Judge Richard Wetzel. A date for arraignment on the charge has not been set.
When bringing a case before the grand jury, the investigating law enforcement officer will typically present testimony and other evidence. Knox County Prosecuting Attorney Chip McConville said Swanson’s case was presented in the “usual manner.” The case included “a thorough vetting of all witness statements, as you’d expect,” McConville said.
According to court records, Swanson was observed Sept. 21 at a Mount Vernon nursing home holding the hand of an 88-year-old woman and using her hand to touch his penis. The woman is incapacitated due to a mental or physical condition, which impaired her ability to consent or resist.
Three staff members of the nursing home witnessed Swanson’s alleged behavior via a video feed from the woman’s room. The feed was not recorded and is in the room for monitoring purposes for medical reasons, McConville said.
Swanson was arrested Sept. 24 and released on a recognizance bond. He is barred from having contact with the elderly woman, as a condition of the bond.
Attempts to contact Swanson’s attorney, Johnathan Spaulding, were unsuccessful.
Swanson is the women’s volleyball coach and a professor for Mount Vernon Nazarene University. He has been placed on administrative leave since his arrest.