Ten members of Tulane University’s Pi Kappa Alpha fraternity were arrested this week, and the fraternity was suspended, after a brutal hazing incident that sent two pledges to the hospital. In a statement, the university declared that it has “zero tolerance for any type of … incident which can potentially endanger the well-being of any student.”

But the Tulane student government urged the university to investigate Pi Kappa Alpha, known as PIKE, for drugging female attendees at its parties more than two years ago, and its complaint was ignored.

In March 2006 the undergraduate student government at Tulane sent a five-paragraph letter to the university administration raising concerns about Pi Kappa Alpha, stating that there was “legitimate reason to believe” that the frat had “served drugged beverages to unsuspecting guests” at a party the previous month.

According to the letter, such allegations had been made “every year” in “recent memory” by female guests at Pi Kappa Alpha parties, with attendees “suspect[ing] that they may have been date raped” while drugged.

The letter also charged that “numerous people were taken to the hospital or injured” as a result of incidents at Pi Kappa Alpha parties, and that the university had responded with “minor punishments and slaps on the wrist.” The fraternity was engaged in “egregious and continuous abuse of the students and the rules,” the letter said, and “the situation gets worse every year.”

In a statement this week, the Tulane administration said that there had “apparently” been “no response from Tulane to this letter.”

On April 26 of this year two Pi Kappa Alpha pledges were hospitalized with second- and third-degree burns after a five-hour hazing ordeal in which fraternity members poured boiling water, crab-boil, and cayenne pepper sauce on pledges’ bodies. Police learned of the incident this past weekend, and filed charges against ten fraternity members on Tuesday.

Tulane suspended the fraternity the same day.

Update: More on Tulane here and here.