Jordan Strauss/WireImage
November 04, 2010 05:30 PM

The fight with a female backup dancer that ultimately sent Demi Lovato to rehab has been described by a source as a “short, physical altercation” that was “one-sided.”

Now reports are circulating on the Internet that the alleged target was Alex Welch, a dancer on The Jonas Brothers tour who goes by the nickname “BGirl Shorty.”

A photo also emerged on the site of Welch sporting what appears to be a bruise around her left eye. The picture shows her sitting next to Nick Jonas and two other women at an apparent Halloween party.

RELATED: Demi Lovato: Details of the Fight that Sent Her to Treatment

Reps for Lovato and Welch declined to comment.

Welch, who was raised in Salt Lake City, is a member of the Beat Freaks, an all-female dance crew from Los Angeles. The group was featured on MTV’s America’s Best Dance Crew and finished Season 3 as runners-up.

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