Rule 11-404. Character evidence; crimes or other acts.

A. Character evidence. (1) Prohibited uses. Evidence of a person’s character or character trait is not admissible to prove that on a particular occasion the person acted in accordance with the character or trait. (2) Exceptions for a defendant or victim in a criminal case. The following exceptions apply in a criminal case: (a) a defendant may offer evidence of the defendant’s pertinent trait, and if the evidence is admitted, the prosecutor may offer evidence to rebut it; (b) subject to the limitations in Rule 11-412 NMRA, a defendant may offer evidence of a victim’s pertinent trait, and if the evidence is admitted, the prosecutor may (i) offer evidence to rebut it, and (ii) offer evidence of the defendant’s same character trait, and (c) in a homicide case, the prosecutor may offer evidence of the victim’s trait of peacefulness to rebut evidence that the victim was the first aggressor. (3) Exceptions for a witness. Evidence of a witness’s character may be admitted under Rules 11-607, 11-608, and 11-609 NMRA. B. Crimes, wrongs, or other acts. (1) Prohibited uses. Evidence of a crime, wrong, or other act is not admissible to prove a person’s character in order to show that on a particular occasion the person acted in accordance with the character. (2) Permitted uses. This evidence may be admissible for another purpose, such as proving motive, opportunity, intent, preparation, plan, knowledge, identity, absence of mistake, or lack of accident. (3) Notice in a criminal case. In a criminal case, the prosecution must (a) provide reasonable notice of any evidence of crimes, wrongs, or other acts that the prosecutor intends to offer at trial, so that the defendant has a fair opportunity to review it; (b) articulate in the notice the permitted purpose for which the prosecutor intends to offer the evidence and the reasoning that supports the purpose; and (c) do so in writing before trial, or in any form during trial if the court, for good cause, excuses lack of pretrial notice.