A Bucks County woman has been arrested after she allegedly administered performance-enhancing drugs to racehorses, the Attorney General's office announced Thursday.

Marian Vega, 25, a groom at the Parx Casino and Racing facility in Bensalem, has been charged with one count of rigging a publicly exhibited contest. She was released on $20,000 unsecured bail to await a preliminary hearing.

According to the Attorney General's office, Vega administered doses of the drug Clenbuterol to a number of horses that was beyond "accepted guidelines." Vega was found with a bottle of the drug during the investigations by the state's Horse Racing Commission and the Attorney General's Organized Crime Section and Gaming Unit. The horses were trained by Ramon Preciado, according to the Daily Racing Form.

The drug is used to treat horses with respiratory disease but when used outside prescribed guidelines has the effect of a performance-enhancing drug.