Los Angeles ( CNN ) -- A man accused of stalking television actress and singer Selena Gomez , 19 , pleaded not guilty Thursday , according to a statement from the Los Angeles County district attorney 's office . Thomas Brodnicki , 46 , has been charged with one count of stalking the teen star , who is thought to be the girlfriend of Canadian pop singer Justin Bieber . Authorities say Brodnicki allegedly stalked Gomez this year , between July and October . He is expected to appear for a preliminary hearing on November 16 . If convicted , Brodnicki could face a maximum of three years behind bars , the statement said . He also now faces a court-issued protective order , requiring Brodnicki to keep away from Gomez for a period of three years . Bail has been set at $ 150,000 , the statement said . Brodnicki 's attorney could not be immediately reached for comment .
Thomas ##on has been charged with one count of stalking the actress Gomez . He , however , has pleaded not guilty . Gomez is thought to be the girlfriend of pop star Justin Bieber .