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.

LIVE UPDATE: On Channel 2 Action News @ 5

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

Porn. 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.

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

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

To hear some of the tamest of those messages, and for much more on this story, watch Richard Belcher's report on WSB-TV Channel 2 Action News at 5.