A suspicious package sent to Bristol Palin at the Los Angeles studio where "Dancing with the Stars" is taped turned out to be harmless, TMZ said.

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Bristol is the 21-year-old daughter of Republican 2008 vice presidential nominee Sarah Palin, as well as a single mother, author and reality TV personality. She is competing on the all-stars edition of the ballroom dance show.

Police, fire and health officials were dispatched to the studio this week to investigate a package with powder on it, but the substance proved innocuous, TMZ said.

A similar incident occurred in 2010 when Palin previously appeared on the series. The package at the focus of that incident was also declared harmless.

Palin's publicist declined to comment on the most recent matter to E! News, citing the show's policy to not discuss security issues publicly.