— After a year-long investigation, a former Duke University student with ties to a family that has given millions of dollars to the school was arrested and charged last month with second-degree rape.

Authorities said Jeffrey Milus Yoh Jr., 22, is charged with raping a student from University of North Carolina at Chapel Hill in an off-campus apartment on Oct. 16, 2015.

The UNC student said Yoh was intoxicated and that he became aggressive and forced himself on her even though she repeatedly said 'No,' according to court documents. The woman then went to the hospital where a rape kit was completed. The grand jury indictment also notes the woman was strangled.

When Duke University police searched Yoh's apartment they collected bedding, a pink tank top, part of a condom wrapper, assorted female garments, a scale, a bong and two gas masks. They also confiscated a backpack containing assorted adult novelties and a bottle of vodka.

Yoh is the grandson of the former chairman of the Duke University Board of Trustees "Spike" Yoh and his wife, Mary Milus Yoh, who donated $5 million to a new football center. The Yoh family also donated more than $1 million to establish the Yoh Family Professorship in social sciences. A university publication referred to the Yoh family as one of the school's "most prominent families."

Yoh is charged with second-degree rape, two counts of second-degree sexual offense, kidnapping and assault by strangulation. He is no longer enrolled at the university.

When asked why it took a year to make an arrest, campus police Chief John Dailey said, "This was a thorough investigation that required assistance and coordination from several other entities."

Yoh's attorney, Joe Cheshire, said "my client is presumed innocent and should be treated as such."

Yoh is out of jail on a $500,000 secured bond. He is due in court next week.