MOUNT OLIVE, NJ - A Hackettstown woman being questioned in a Mount Olive Police Department interview room urinated in a cup when left alone in the room and dumped the urine onto the carpet, police said.

They said the actions of the woman, Michelle Bishop, 40, prompted them to file charges of aggravated assault and criminal mischief. In a statement, police said Bishop's behavior - "exposing her bodily fluid to numerous officers" - warranted the charges.

The incident took place Sept. 30 but police did not know about it until Dec. 9, police said. It was on that day that police, while reviewing a video of Bishop being interviewed in the room on Sept. 30, saw what Bishop did, they said.

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"While continuing to investigate another matter concerning Ms. Michelle Bishop, this agency had the occasion to review a recorded interview involving Ms. Bishop," police said. "During the course of reviewing the previously recorded interview, Cpl. (Marianne) Wurtemberg observed, when Officer (Anthony) Gardner was not present, that Ms. Bishop pulled down her pants, urinated in a Styrofoam cup, and then proceeded to pour her urine onto the floor of the interview room."

Police said they saw that Bishop did that twice "and did not notify anyone" about it.

"In doing this, she exposed numerous persons and law enforcement to her bodily fluid," police said. "The room was placed out of service until the carpet could be replaced."

Bishop was released after being charged.