State v. Aragon

CourtNew Mexico Supreme Court
DecidedMay 11, 2026
StatusPublished

This text of State v. Aragon (State v. Aragon) is published on Counsel Stack Legal Research, covering New Mexico Supreme Court primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
State v. Aragon, (N.M. 2026).

Opinion

The slip opinion is the first version of an opinion released by the Chief Clerk of the Supreme Court. Once an opinion is selected for publication by the Court, it is assigned a vendor-neutral citation by the Chief Clerk for compliance with Rule 23- 112 NMRA, authenticated and formally published. The slip opinion may contain deviations from the formal authenticated opinion.

1 IN THE SUPREME COURT OF THE STATE OF NEW MEXICO

2 Opinion Number:

3 Filing Date: May 11, 2026

4 NO. S-1-SC-40256

5 STATE OF NEW MEXICO, 6 Plaintiff-Appellee, 7 v.

8 CASTULO ARAGON, JR., 9 Defendant-Appellant.

10 APPEAL FROM THE DISTRICT COURT OF CHAVES COUNTY 11 Jared G. Kallunki, District Judge 12 Bennett J. Baur, Chief Public Defender 13 Kimberly M. Chavez Cook, Appellate Defender 14 Mary Barket, Assistant Appellate Defender 15 Santa Fe, NM 16 for Appellant

17 Raúl Torrez, Attorney General 18 Santa Fe, NM 19 Michael J. Thomas, Assistant Solicitor General 20 Albuquerque, NM

21 for Appellee 1 OPINION

2 VIGIL, Justice.

3 {1} Defendant Castulo Aragon, Jr., was convicted by a jury of the first-degree

4 murder of his wife, Maria Aragon (Victim), and three counts of tampering with

5 evidence. Defendant chose to represent himself at the trial. On direct appeal to this

6 Court he now raises approximately twenty various arguments that can be distilled

7 to: (1) issues related to the admission of lay testimony; (2) issues related to the

8 admission of expert testimony and whether Defendant’s right to confront witnesses

9 under the Sixth Amendment was violated; (3) issues related to the sufficiency of the

10 evidence supporting Defendant’s convictions; (4) whether the count three conviction

11 is barred by double jeopardy; and (5) whether prosecutorial misconduct occurred.

12 We conclude that none of Defendant’s arguments warrant a new trial, and we affirm

13 the jury’s verdict on counts one, two and four. However, we remand the case to the

14 district court for dismissal of Defendant’s count three conviction for tampering with

15 evidence because it is barred by double jeopardy.

16 I. BACKGROUND

17 {2} Victim and Defendant met in December, 2015, and married four months later,

18 in April, 2016. Victim and Defendant knew each other for a total of fifteen months

19 when she was murdered in March, 2017, and they were married for eleven of those 1 months. On Monday, March 6, 2017, at approximately 9:40 a.m., Victim was found

2 deceased by the side of the road along Highway 285 north of Roswell, New Mexico.

3 She was lying face down near some large piles of gravel. Her bloody sweater was

4 on backward and her hair was matted with blood.

5 {3} There was no evidence of blood dripping down onto Victim’s clothes, despite

6 significant head trauma. There was no blood on the ground, even though Victim had

7 significant injuries. Nor was there evidence that Victim walked to the location where

8 she was discovered. The evidence suggested that Victim was transported to the

9 scene, was “deposited” where she lay, and was not there long before she was

10 discovered.

11 {4} Expert witness testimony revealed that Victim received three different types

12 of fatal injury. She was strangled, stabbed in the chest, and struck in the head with a

13 blunt object. Victim lived for six to twenty-four hours from the time of the head

14 injuries, which resulted in internal skull fracture and lacerations. The lack of ligature

15 marks suggested manual strangulation, although the evidence was inconclusive.

16 Victim’s jaw was badly broken. A police officer with twenty-four years of

17 experience who was admitted as an expert in crime scene investigation testified that

18 this was “one of the more violent cases that [he had] seen.”

19 {5} Evidence of Victim’s blood was found in multiple locations to which 1 Defendant had access. Evidence of her blood was found on a “significant area”—

2 approximately one and one-half feet by two feet—in the cargo area of Victim’s

3 Honda CRV. This evidence was consistent with the placement of an object that was

4 “very wet and very bloody but not . . . actively bleeding” in the cargo area of the

5 Honda CRV. The armrest of the car also contained evidence of Victim’s blood.

6 {6} The laundry room in the Roswell home Victim shared with Defendant had

7 small, circular bloodstains in a pattern suggesting that a person was spitting or

8 coughing blood while near the floor. There were additional stains in the laundry

9 room higher up on the wall, approximately two to four feet from the floor. This was

10 Victim’s blood. Evidence of Victim’s blood was also found on the clothes dryer, the

11 wall adjacent to the laundry machines, and the floor of the laundry room.

12 {7} At a different Roswell property owned by Defendant—where he lived in a

13 trailer before moving in with Victim—police found Victim’s blood in a trash can on

14 newspapers, a paper towel, an Allsups convenience store bag, and pieces of duct

15 tape. Victim’s blood was spattered on the Allsups bag, which indicated that the blood

16 was flung through the air and onto the bag with enough force to break up the blood

17 into small droplets. The newspaper was saturated with blood, meaning that it was in

18 contact with a bloody object. One piece of duct tape was approximately four feet

19 long with “staining all over.” The duct tape was too stained with Victim’s blood to 1 test for the DNA of someone who might have touched the tape. Despite all of the

2 locations with Victim’s blood described above, police concluded that there was

3 another “scene [they] did not find” where Victim died.

4 {8} The State’s expert in digital forensics testified that on the night of Saturday,

5 March 4, 2017, into Sunday, March 5, 2017—approximately one day before Victim

6 was found deceased on the morning of Monday, March 6, 2017—Defendant’s phone

7 was away from home nearly all night. More specifically, Defendant’s phone was

8 south and east of his home from approximately 8:00 p.m. to 10:00 p.m. on Saturday,

9 and from 1:00 a.m. until at least 10:00 a.m. on Sunday morning.

10 {9} At about 10:00 a.m. on Sunday, Defendant’s phone began moving north from

11 where it had been all night. The expert testified that “the phone was very busy

12 throughout [Sunday] up and down Roswell” and did not “become static at home”

13 until almost thirteen hours later at approximately 11:00 p.m. Then, at 3:06 a.m. on

14 Monday, March 6, Defendant’s phone was again moving away from home, south

15 and east of Defendant’s residence. At 6:46 a.m. Defendant’s phone was on the relief

16 route off Highway 70 in northern Roswell, which is close to where Victim’s body

17 was found a few hours later.

18 {10} Victim’s father and a Honda car dealership salesman each provided additional

19 evidence. Victim’s father testified that when he spoke with Victim by phone on 1 Saturday, March 4, they had a conversation about the marriage, and she told him that

2 she was, in her father’s words, “quite upset at the manner that [Defendant] would

3 act.” Victim’s father told her that “since [the] relationship was quite wearing on her

4 . . . the best thing to do would be to end it.” They planned to talk the next day, which

5 was the day before her body was found, but Victim did not answer any of her father’s

6 calls.

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State v. Aragon, Counsel Stack Legal Research, https://law.counselstack.com/opinion/state-v-aragon-nm-2026.