Demi Lovato's gig in Brazil on Sunday night (27Apr14) was marred by drama when one of her security team was reportedly bitten by a stage invader.
The pop star performed at Citibank Hall in Rio de Janeiro and she took to Twitter.com after the show to reveal a bizarre incident had taken place during the concert.
Lovato claims a female fan jumped onto the stage and bit one of the security guards who attempted to remove her.
The singer writes in a post on the social networking website, "Apparently some girl BIT one of my security guards after she jumped on stage and I never even noticed..."
However, Lovato did not let the incident ruin her good mood following the show, writing, "My fans are the bestest (sic).... Rio, you rocked."
No more details about the incident were available as WENN went to press.