Former TN college student pleads guilty to dumping toilet water into roommate's bottles

At left, Tierni Williams, at right, a file image of a public toilet. (Metropolitan Nashville Police Department; WZTV)

A former Tennessee State University student has pleaded guilty to contaminating her roommate's drink with toilet water.

Tierni Williams pleaded guilty to tampering with her roommate’s water on Tuesday,

Back in 2017, the victim says she lost weight and her appetite and couldn’t figure out why. That’s when she claims she learned via Snapchat that her roommate, Tierni Williams, had been dumping water from the toilet into her water bottles.

According to an affidavit, video shows Williams getting liquid from the toilet with a styrofoam cup, then transferring it into water bottles on her roommate's side of the dorm. Williams reportedly narrates during the video, laughing and using expletives while stating her roommate is "gonna get sick from this" and it's "nasty."

Sentencing is scheduled for next month.