More than 1,000 people have signed a petition demanding the expulsion of several students at American University after emails from an unofficial fraternity discussing an alleged rape were leaked to the administration.

American University officials are investigating dozens of emails that were sent from an anonymous email address and came from an unofficial fraternity called Epsilon Iota. The group lost their charter at AU in 2001 after a date rape scandal, according to a blog which published censored versions of the emails.

“By perpetrating these heinous acts, they have proven themselves unworthy of being members of our community,” the petition read, which had been signed by 1,341 people by Wednesday night. The most recent emails are from 2013.

The petition called for increased education about sexual assault for the entire campus with mandatory bystander intervention training at freshmen orientation and trainings for Greek members every semester.

It also called for the hiring of a full-time survivor advocate to work with victims of sexual assault on campus. A separate petition for that position has reached 2,795 signatures.

The university is investigating the incident, according to a memo sent to the community by AU President Neil Kerwin on Monday.

“That these alleged behaviors may have occurred within our community reminds us that we are not immune from the problems that have occurred on campuses across the country,” he said.

Last April, a leaked email from the president of a Delta Gamma sorority chapter at the University of Maryland went viral as the president harassed members in an expletive-laced tirade.