A man accused of trying to sell nude videos of Andrews pleaded not guilty last month in federal court in Los Angeles to a charge of interstate stalking.

The warrants were served in Northern California on Wednesday, and it's unclear what was taken from the tech firms.

Michael David Barrett, 48, is accused of shooting videos of Andrews through peepholes of hotel rooms in three different states and trying to post those videos on the Internet after trying to sell them to TMZ.com, court records show.

Barrett's trial is scheduled for Jan. 12. If convicted, he faces a maximum sentence of five years in federal prison.

The Illinois native was arrested Oct. 2 at Chicago O'Hare International Airport.A U.S. magistrate judge ordered Barrett free on $100,000 bond.

-- Richard Winton

Photo: ESPN sideline reporter Erin Andrews in 2008. Credit: Mike Zarrilli / Getty Images