A Drexel University fraternity has been placed on interim suspension while the school investigates two allegations of sexual assault at the frat house in the city's Powelton section.

According to an emailed statement from Drexel, the sexual assaults are alleged to have occurred at the Tau Kappa Epsilon fraternity on the 3400 block of Powelton Avenue between April 28 and Thursday.

The school notified students of the investigation through a public safety advisory Friday.

The probe is being conducted by Drexel University police and the school's Office of Equality and Diversity. The Philadelphia Police Department's Special Victims Unit is not involved, a city police spokesman said.

A number listed for Tau Kappa Epsilon on the fraternity's Facebook page rang to a fax machine. An email to the fraternity seeking comment was not returned.

According to a 2014 article in Drexel's student newspaper, the Triangle, this is not the first time the fraternity has faced suspension. In 2013, Tau Kappa Epsilon was suspended for rules violations, and in May 2014 it was placed on interim suspension for an unknown reason, according to the newspaper.