Penn State and its police department didn't immediately respond to a request for comment on the reported gatherings.
Warren said the conference's leadership was "overwhelmingly in support" of postponing fall sports and stated the topic won't be revisited.
"Furloughs at a minimum, are in our immediate future."
Moving forward, Penn State Athletics will report unaggregated testing figures on a weekly basis.
"While I appreciate the complexities and difficulties of this decision for the leaders of our conference, I am extremely frustrated because we still have very few answers to communicate to our young men and their families."
Incoming freshmen won't need to miss out on annual Welcome Week events this fall.