The prosecutor in Bill Cosby's sex-assault case is opposing the actor's demand that the trial judge step down before this month's sentencing.
Cosby's lawyers say Judge Steven O'Neill has a longstanding grudge with a key pretrial witness and should have recused himself. O'Neill is set to sentence Cosby on Sept. 24 over his 2004 encounter with a woman at his estate near Philadelphia.
The witness involved in the dispute is a former county prosecutor, Bruce Castor, who declined to charge Cosby when the woman came forward in 2005.
Montgomery County District Attorney Kevin Steele in a court filing Thursday notes that the judge handled cases involving Castor's office for 20 years.
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Cosby faces up to 10 years in prison on each count but could get far less time under state sentencing guidelines.