Neb. Rev. Stat. §§ 42-928
A peace officer shall with or without a warrant arrest a person if (1) the officer has probable cause to believe that the person has committed a violation of an order issued pursuant to section 42-924, a violation of section 42-925, a violation of an order excluding a person from certain premises issued pursuant to section 42-357, or a violation of a valid foreign protection order recognized pursuant to section 42-931 and (2) a petitioner under section 42-924 or 42-925, an applicant for an order excluding a person from certain premises issued pursuant to section 42-357, or a person protected under a valid foreign protection order recognized pursuant to section 42-931 provides the peace officer with a copy of a protection order or an order excluding a person from certain premises issued under such sections or the peace officer determines that such an order exists after communicating with the local law enforcement agency.
Neb. Rev. Stat. §§ 42-928