A Colorado State University sorority was quietly ousted from the university in the spring after campus police found numerous alleged incidents of hazing and harassment that one sorority pledge called "torture."

Pledges from CSU's Omicron Omicron chapter of Zeta Phi Beta, a nationally chartered black sorority, alleged that they were at times harassed, deprived of sleep and food, and forced to eat cat food and to perform "strenuous physical activity" that prompted one student to seek medical attention.

One student also told police she was forced to write the sorority president's academic papers. If true, that would be a violation of the school's honor code and grounds for expulsion for both.

In a 56-page police incident report obtained by The Rocky Mountain Collegian newspaper, pledges describe a litany of tasks they were forced to perform guided by former sorority president Adesuwa Elaiho, who also was an active member of the school's student government during the time of the allegations.

"She had us at her apartment for three days straight. No sleep, no food. I threw up because I was so hungry," one alleged victim said in a statement to police.