The University of Vermont chapter of Sigma Phi Epsilon has been suspended after the fraternity concluded a survey by asking members, "Who would you like to rape?"

The national head of the fraternity told the Burlington Free Press this afternoon there may be two other objectionable questions on the survey, but he said he would not comment until he had more information.

"We will not tolerate this behavior," said Brian Warren, who has been executive director of the national organization since 2009. "This is not a theme throughout the country. This is very unique in my two years."

He said he was "shocked" by the questionnaire's query, "If you could rape someone, who would it be?", adding it was not typical of the fraternity's 117 chapters. (The national's website describes Sigma Phi Epsilon, founded in 1901 in Richmond, Va., as "one of the largest college fraternities with over 15,000 undergraduates at 241 chapters.")

The Free Press says university officials have said it's unclear who wrote the survey, whether it was sent out or whether anybody responded.

The survey takers apparently weren't acquainted with some of the fraternity's basic values.

Here's how the local SigEp chapter describes its "Principles of Moral":

The mission of SigEp is clear: Build Balanced Leaders for the World's Communities. This leadership is developed by helping members strive for balance in their lives, building Sound Minds and Sound Bodies as a lifetime habit based on one of the core ideas of ancient Greek philosophy of the Balanced Man. The founders of Sigma Phi Epsilon admired the ancient Greeks and desired to establish a fraternity based upon their balanced life ideal. They selected Virtue, Diligence, and Brotherly Love as the cardinal principles. These remain the cardinal principles of SigEp to this day.

Here's some of the national "creed," which is posted on the local chapter's site:

I believe that the word Virtue is an inclusive term; that it is not enough that I be merely passively virtuous: I must be positive on virtue's behalf. Therefore, I will stand aggressively for honesty in all walks of life, and I will speak cleanly, play cleanly, and live cleanly. Whenever I can, I will oppose lawlessness and vice. ... I believe that obedience to the laws of my community and my country is essential to good citizenship; that the laws and rules of my Fraternity and my chapter are intended to regulate the actions of its members, one with another, and that without fidelity to those laws and rules I cannot be a good citizen and a worthy member of Sigma Phi Epsilon. ...

Investigations are underway by the university, the national organization and campus police. The 50 local SigEps, in Burlington, were being interviewed, and Warren said the fraternity might finish its probe tonight.

Update at 7:41 p.m. ET: A fraternity official doing the internal investigation told WPTZ-TV today the survey "looks like" the work of "an individual acting on their own accord."

"This doesn't look like something that was distributed by the chapter or the chapter leadership," said chapter services director Tyler Boggess.

He also said the chapter was "looking into possibly removing a member or members of the chapter," WPTZ writes.