Robert Elliot says Edwards was deposed last week as part of a dispute between former Edwards aide Andrew Young and Edwards' mistress, Rielle Hunter. Elliot would not discuss the content of the testimony.
A judge said last year he didn't want the details discussed publicly and warned both sides there could be repercussions if the material is talked about outside of the case.
Hunter has sued Young to reclaim materials, including a video that Young has said depicts a sexual encounter involving Edwards and a woman he assumes to be Hunter. Young contends the tape was found amid trash that Hunter left behind in a home he was renting.