State v. Sanchez, 355 P.3d 51

Defendant Matthew Sanchez fatally stabbed a friend on Sept. 10, 2011 and threw the knife from his car; the knife was never recovered.
Defendant testified to stabbing and lying to police, but claimed self-defense.
During cross-examination, Defense elicited Witness’s memory of Defendant’s peaceful demeanor, prompting State to offer rebuttal evidence about prior acts.
District court allowed limited rebuttal inquiry under Rule 11-404(A) and 11-405, focusing on one incident (aggravated assault with a deadly weapon) and providing limiting instructions to the jury.
Jury convicted Sanchez of second-degree murder and third-degree tampering with evidence; defendant appeals on evidentiary and sufficiency grounds.
Court affirms both convictions, holding proper admission of rebuttal evidence, sufficiency of tampering evidence, and no fundamental error for third-degree tampering conviction.

Issue	Plaintiff's Argument	Defendant's Argument	Held
Was the rebuttal evidence properly admitted?	State argues questioning about a prior act tested witness's opinion and was proper under Rule 11-404(A)(2)(a).	Sanchez contends the state used unproven, prejudicial, unrelated acts to impeach his character.	Yes; district court did not abuse discretion; limited, reliabl e inquiry with proper instructions allowed.
Was there sufficient evidence to sustain the tampering with evidence conviction?	State contends the knife disposal was an overt act linking to intent to impede investigation.	Sanchez argues conflicting evidence undermines intent to tamper.	Yes; substantial evidence supports intent to tamper and the conviction.
Did the entry of third-degree tampering constitute fundamental error?	State asserts implied element(s) were proved and omission did not cause fundamental error.	Sanchez claims failure to tie tampering to a specific underlying crime violates Sixth Amendment safeguards.	No fundamental error; evidence showed the corresponding underlying crime (second-degree murder) and elements were met.

State v. Stanley, 2001-NMSC-037 (New Mexico) (abuse of discretion standard for evidentiary rulings)
State v. Christopher, 1980-NMSC-085 (New Mexico) (Michelson factors applied to prior-act/character evidence)
Michelson v. United States, 335 U.S. 469 (S. Ct. 1948) (cross-examination of prior acts and convictions)
State v. Godoy, 2012-NMCA-084 (New Mexico) (parallel-cross-examination considerations)
State v. Martinez, 2008-NMSC-060 (New Mexico) (limitations on character-evidence rebuttal)
State v. Jackson, 2010-NMSC-032 (New Mexico) (tampering with evidence requires inferable intent from overt act)
Herrera, 2014-NMCA-007 (New Mexico) (fundamental error analysis for third-degree tampering where missing element shown by record)
State v. Sutphin, 1988-NMSC-031 (New Mexico) (evidentiary sufficiency when reviewing jury verdict)
Alvarado, 2012-NMCA-089 (New Mexico) (third-degree tampering and underlying felony linkage)
State v. Garcia, 2011-NMSC-003 (New Mexico) (contextual framework for reviewing sufficiency and related standards)