"Dancing with the Stars" Studio Received Threatening Letter with White Powder

LOS ANGELES (CBS/AP) Not everyone is a fan of ABC's hit television series "Dancing with the Stars," but one person apparently went to great lengths to make that point -- by sending a threatening letter filled with white powder to the Los Angeles studio where the show is filmed.

The crew was forced to evacuate the building Friday evening, but according to RadarOnline.com none of the remaining contestants were in the building at the time.

Authorities say the powder was tested and was not hazardous.

In a statement, ABC confirmed the envelope was received at the show's production office and the substance was determined to be talcum powder.

It is unclear whether the letter was directed at one of the three remaining stars: Bristol Palin, Jennifer Grey, or Kyle Massey; however, Bristol, the daughter of the former governor of Alaska Sarah Palin, has been the center of controversy since her very first appearance.

Palin has remained on the show, despite consistently landing at the bottom of the judges' leaderboard.

The incident occurred just days before the final showdown for the mirror-ball trophy.