The federal judge overseeing the dispute between Roc Nation, a subsidiary of retail giant Amazon and a prominent Philadelphia attorney that stemmed from the filming of a documentary series about the rapper Meek Mill has asked the parties to have an expert review the allegedly leaked audio recording that is at the center of the controversy.

U.S. District Judge Gerald McHugh of the Eastern District of Pennsylvania last week issued an order asking the parties to either agree on an expert to evaluate the audio tape or submit names of qualified experts who could review the tape for authenticity.