LOS ANGELES �— Terry Christensen, the only lawyer indicted in the criminal probe of celebrity sleuth Anthony Pellicano, has sought to replace his lead defense counsel, Dan Webb, with his fellow law firm partner, Patty Glaser, according to court papers filed on Wednesday.

In response, federal prosecutors filed a motion on the same day to disqualify Glaser from the case because, among other things, she agreed to testify as a potential witness after receiving a government subpoena on Jan. 25.