ATLANTA -- Channel 2 Action News has learned that an audit of one of thousands of questionable P-card purchases at Georgia Tech uncovered evidence that sex acts were transmitted from a Tech computer, on campus, during work hours.

Georgia Tech auditors also seized computer files documenting scores, possibly hundreds, of sexually explicit online chats.

Wanda Wilson was fired for fraudulent use of a purchase card; accused of running up a bill of only $724, a tiny fraction of the total P-card loses.

But after Georgia Tech auditors discovered Wilson's suspect purchases, they starting analyzing how she'd been using two laptops and one desktop computer.

What they found shocked them well beyond the P-card allegations.

Hardcore, pornographic images were stored on university-owned computers.

Georgia Tech officials provided some of the images to Channel 2, but they are too explicit for TV or the Internet.

There were also scores of chat-room messages -- many of which are also extremely graphic.

Here’s one sample from the middle of a workday in January of last year.

wilson's friend -- where u want to see me do it at.

wilson -- i have no clue.

friend -- in my office is fine.

wilson -- you are kidding right

Wilson worked for Georgia Tech's School of Electrical Engineering and Computing.

Auditors say they have evidence she was having sex in her office and transmitting pictures of herself using Georgia Tech equipment.

The university fired her last September.

Wilson appealed in a letter saying in part, “I am a very good worker, and feel that after the P-card transaction, I was targeted for dismissal."

In an e-mail, Wilson wrote that she lost her job, “Because of the past lifestyle that I chosen." (sic)

Wilson was arrested on the P-card-related charges in March.

The state attorney general's office says it is still investigating the case.

A Georgia Tech spokesman said in a statement, “Georgia Tech's advanced ability to find computer misuse is a testament to our commitment to stop waste, fraud and abuse and bring abusers to justice."

Channel 2 was unable to reach Wilson for a comment.