NRS 172.139: District attorney and grand jury prohibited from questioning attorney regarding matters learned for client or issuing subpoena for work done by attorney for client.

During a grand jury proceeding, the district attorney and the grand jurors shall not:

1. Question an attorney or an attorney’s employee regarding matters which were learned during a legitimate investigation for a client.

2. Issue a subpoena for the production of the private notes or other matters representing work done by the attorney or the attorney’s employee regarding the legal services which the attorney provided for a client.