NASHVILLE -- Investigators say the peep video that invaded ESPN sideline reporter Erin Andrews' privacy and made national headlines recently was shot in a Nashville hotel.

FBI agents arrested 48-year-old Michael "Mark" David Barrett, of Westmont, Ill., at the Chicago O'Hare airport Friday night on federal charges of interstate stalking for allegedly taking nude videos of the broadcaster, posting those videos on the Internet, and attempting to sell the videos to a celebrity Web site.

Investigators had initially said the videos were taken through a peep hole and contain footage of Andrews dressing in her hotel room.

Now, investigators said some of the videos he posted online were taken at the Marriott Hotel at Vanderbilt.

According to the FBI, Barrett checked with hotels in several cities where Andrews worked to find out what room she'd be in. Officials said he would then ask for the room next to hers.

Marriott Hotel personnel would not comment on why hotels would give out that information, but did issue the following release:

"We are aware of this unfortunate situation involving Ms. Andrews," said Jeff Flaherty, the director of public relations at the Vanderbilt hotel. "We are cooperating fully with the authorities during their investigation. As this is an ongoing investigation, it would be inappropriate for us to comment further."