Aaron Holloman, resident life coordinator at Pennypacker Hall, a dormitory primarily for freshman students, resigned his position Monday, Penn State spokeswoman Lisa Powers said.
Police officers found 10 men in Holloman's room in Pennypacker Hall during spring break, engaged in what they suspected was hazing activity, a police report said.
Holloman left his room unlocked during the break, and a graduate assistant, Claude Mayo, allowed the men access to the room, the report said.
Mayo resigned from his position May 2, Powers said.
No charges have been filed, Penn State Police Chief Tyrone Parham said, but university officials said several students were prevented from graduating as the investigation continues.
The State College, Pa., newspaper The Centre Daily Times reported that a third hazing incident is being investigated by campus police. A female student told police April 4 she was harassed and exposed to hazing by sorority members between January and February.