Nellie Andreeva

CBS Television City, which houses ABC's reality series Dancing with the Stars, was evacuated tonight over a threatening letter received at the Dancing production offices that contained white powder. Here is ABC's statement about the incident:

An envelope containing an unknown substance was delivered to the Dancing with the Stars production office on Friday evening. ?Security and the Los Angeles Fire Department and Los Angeles Police Department were immediately notified. ?Measures were taken to secure the area and ensure the safety of personnel.? Ultimately we were advised by the LAFD that the substance was determined to be talcum powder.

The authorities have not confirmed online reports that the letter was addressed to Sarah Palin's daughter, Bristol Palin, who surprisingly made it to the final round of the dancing competition despite a string of so-so performances.

TV Editor Nellie Andreeva - tip her here.