Neb. Rev. Stat. §§ 29-1602
All informations shall be filed in the court having jurisdiction of the offense specified therein, by the prosecuting attorney of the proper county as informant. The prosecuting attorney shall subscribe his or her name thereto and endorse thereon the names of the witnesses known to him or her at the time of filing. After the information has been filed, the prosecuting attorney shall endorse on the information the names of such other witnesses as shall then be known to him or her as the court in its discretion may prescribe, except that if a notice of aggravation is contained in the information as provided in section 29-1603, the prosecuting attorney may endorse additional witnesses at any time up to and including the thirtieth day prior to the trial of guilt.
Neb. Rev. Stat. §§ 29-1602