Nev. Rev. Stat. § 143.037
2. If an estate is not closed within 18 months after the appointment of a personal representative and:
(a) A claim against the estate is in litigation or in summary determination pursuant to subsection 5 of NRS 145.060, a petition for determination of the validity of the claim has been filed pursuant to subsection 2 of NRS 147.130 or the amount of federal estate tax has not been determined, a devisee, creditor or heir may file a petition seeking an order that:
(1) A certain amount of money, or certain other assets, be retained by the personal representative to:
(b) A contest of the will or a proceeding to determine heirship is pending, a devisee, creditor or heir may file a petition requesting the court which appointed the personal representative to order that:
(Added to NRS by 1997, 335; A 1999, 2291; 2001, 2344; 2017, 1677)