Sierra, 21, was booked in the Hillsborough County Jail on a charge of aggravated battery with a deadly weapon. She was also charged with possession of cocaine and introduction of contraband into a correctional facility after officers found a small amount of the drug while searching her, police spokeswoman Andrea Davis said.
Sierra was released Sunday afternoon on $11,500 bail. There was no immediate indication if she had a lawyer.
The victim suffered a cut over his eye, but the spokeswoman gave no further information.
Sierra, of Tampa, was one of the hit show’s top 10 contestants in 2005.
