Nebraska Revised Statutes Chapter 29. Criminal Procedure § 29-439. Domestic assault; arrest; conditions; report required

(1) If a peace officer receives complaints under section 28-323 from two or more opposing persons, the officer shall evaluate each complaint separately to determine who was the predominant aggressor. If the officer determines that one person was the predominant aggressor, the officer need not arrest the other person believed to have committed an offense. In determining whether a person is the predominant aggressor, the officer shall consider, among other things:

(2) In addition to any other report required, a peace officer who arrests two or more persons with respect to such a complaint shall submit a detailed, written report setting forth the grounds for arresting multiple parties.