A California sheriff confirmed Wednesday that the abductors of a woman who was held captive for three weeks branded her with a "message" before she was released and said he had no reason to doubt her story.

Shasta County Sheriff Tom Bosenko told reporters at a press conference Wednesday that Sherri Papini was branded by her captors, but did not disclose where she was branded or with what "for integrity of the investigation."

In an earlier interview, Bosenko told ABC's "Good Morning America" that the suspects may have been trying to humiliate Papini by cutting off her long blonde hair and branding her.

Bosenko declined to elaborate on the branding, saying only that it was a message, not a symbol.