Cal. CCP § 1421

Whenever the Attorney General is informed that any estate has escheated or is about to escheat to the state, or that the property involved in any action or special proceeding has escheated or is about to escheat to the state, the Attorney General may commence an action on behalf of the state to determine its rights to the property or may intervene on its behalf in any action or special proceeding affecting the estate and contest the rights of any claimant or claimants thereto. The Attorney General may also apply to the superior court or any judge thereof for an order directing the county treasurer to deposit in the State Treasury all money, and to deliver to the Controller for deposit in the State Treasury, all other personal property, in the possession of the county treasurer, which may become payable to the State Treasury pursuant to Section 7643 of the Probate Code.