Authorities believe she ran off with a suspected child molester she met online. It is not known if authorities found the suspect with the girl in Las Vegas.
The girl was last seen Sunday near her home. An Amber Alert was issued Tuesday morning.
Sheriff's detectives believe she was with 22-year-old Ivan Lopez from Lennox, who has an active felony warrant in San Bernardino County for a sex crime involving a minor that occurred in 2009.