State Of Washington, V. Tristan Trinh

Court of Appeals of Washington·Decided May 11, 2026·No. 86539-1·Unpublished

Opinion

IN THE COURT OF APPEALS OF THE STATE OF WASHINGTON

STATE OF WASHINGTON, No. 86539-1-I

Respondent,

DIVISION ONE

v.

UNPUBLISHED OPINION

TRISTAN TRAN TRINH,

Appellant.

HAZELRIGG, C.J. — Tristan Trinh appeals from a conviction for murder in the first degree after a jury trial. Trinh avers that he received ineffective assistance of counsel, the trial court erred and infringed on his right to present a defense by excluding evidence, the prosecutor engaged in misconduct, and cumulative error prevented him from receiving a fair trial. Trinh also presents a number of other purported errors in a statement of additional grounds for review. Because none of Trinh’s contentions establish entitlement to relief, we affirm.

FACTS

Tristan Trinh was charged with murder in the first degree by premeditation with a special aggravating circumstance and separate firearm sentencing enhancement based on an altercation he had with Roy Ashmore on August 6, 2022. At the time, Tristan Trinh lived with his grandmother, Pamela Norton, in Startup, Washington. Norton’s property contained several buildings, including one

that served as both her living space and antique shop and a separate outbuilding that had been converted into a residence for Trinh. The day before the incident at issue here, Norton and Trinh had argued over damage she believed Trinh had caused to her truck and home and she called the police in an attempt to remove him from the property. Norton later stated that law enforcement declined to do so. As a result, she called her friend, Ashmore, the next morning and relayed the events of the previous night, noting that she “was in the process of filling out a restraining order online.” Norton asked Ashmore if they could meet up and if she could “stay at his place for a couple days.” Norton later testified that Ashmore offered to come to the home.

Trinh and Norton both testified at the resulting trial and provided similar accounts of how events unfolded. When Ashmore arrived at Norton’s property, he repeatedly called out to Trinh, “Where’s your grandma?” Norton later described Ashmore’s tone of voice at this time as “frantic.” Ashmore and Trinh struggled at the door to Norton’s residence; Ashmore was trying to gain entry, and Trinh was trying to prevent it. The altercation escalated and became physical, but Trinh walked away after the two separated.

After the initial confrontation at Norton’s shop, Trinh retrieved his firearm from the safe where he stored it, went back outside, and waited for Ashmore to leave the property. Norton, Ashmore, and Ashmore’s son, T, 1 then went outside because their friend David Everist had arrived. Everist later testified that after the group had discussed the situation back near the vehicles, Ashmore approached

1 Because he was a minor both at the time of the incident and his testimony at trial, we refer to Ashmore’s son by his first initial.

Trinh who was by then standing behind a dumpster towards the rear of the property. Everist asserted that Ashmore was simply attempting once again to convince Trinh to leave.

Trinh testified that as Ashmore approached, Trinh “saw him place on the ground to his right[,] a brown firearm holster” but also stated he was not certain that the item he saw was actually a holster. Trinh further explained, “I also visibly saw him with something silver in his hand, or like chrome.” Trinh was again uncertain about what exactly that other silver or chrome object was but “thought it was a firearm.” Trinh testified that Ashmore continued toward him and Trinh gave several verbal warnings that Ashmore disregarded. Soon thereafter, Ashmore turned and began to walk away, and Trinh said, at that point, he believed Ashmore was going to shoot him. Trinh asserted that Ashmore had turned back toward him after walking away and that is when Trinh fired several times, including once at Ashmore’s head after he had fallen to the ground due to the initial shots. Trinh fled after removing the magazine from his pistol, and Everist pursued him. Everist said that Trinh placed the gun on the ground and walked with him until they ultimately returned to Ashmore. Deputies from the Snohomish County Sheriff’s Office (SCSO) responded to Norton’s 911 call and placed Trinh under arrest. Ashmore died at the scene.

On August 26, the State filed an information that alleged Trinh had committed murder in the first degree by premeditation and included a firearm enhancement. Trinh’s counsel sought and was granted an order for a competency

evaluation in February 2023. 2 The state evaluator conducted two interviews with Trinh, on March 6 and March 15, with defense counsel present for each. 3 The evaluator issued their report on March 20 and opined that Trinh was competent to stand trial because he had “the capacity to understand the nature of the proceedings against him and the capacity to assist in his defense” but recommended further assessment to rule out a diagnosis of “Cannabis Use Disorder.” On March 29, based on the report, the trial judge entered an order finding that Trinh was competent because there had “not been a showing by a preponderance of the evidence” that the statutory standards regarding lack of competency to stand trial were met.

On September 14, the State filed an amended information to include as an aggravating factor an allegation that “the crime involved a destructive and foreseeable impact on persons other that [sic] the victim, as provided by RCW 9.94A.535(3)(r),” based on the presence of Ashmore’s minor son, T, at the scene of the shooting. In January 2024, Trinh filed his trial brief and motions in limine that indicated he would pursue a self-defense theory for the case. Trinh sought the admission of evidence regarding Ashmore’s pistol that law enforcement had recovered from his vehicle after the incident. Trinh’s contention was that “the doctrine of res gestae renders the evidence that Mr. Ashmore brought a pistol with him to the scene incredibly relevant” and admission of evidence regarding the presence of the pistol in the truck was necessary to tell a complete version of

2 The court issued a second order a week after the first that extended the period of time for

evaluation based on the unavailability of Trinh’s attorneys.

3 The defense attorney present for the March 6 evaluation was not Trinh’s counsel of

record, but Trinh’s assigned public defender was present for the March 15 evaluation.

events. Roughly a week later, the State filed its own trial memorandum and motions in limine, which included a motion to “exclude all argument and evidence that a holstered pistol was located in Roy Ashmore’s” vehicle because “there [wa]s no evidence [Trinh] had any knowledge of the pistol located in Mr. Ashmore’s truck.” The State argued that this meant the pistol could not have had an “impact on [Trinh’s] state of mind when he killed Mr. Ashmore” and the evidence “would be speculative and misleading to the jury” in the context of a self-defense case. The judge entered a tentative ruling excluding evidence related to the pistol found in the pickup but indicated that it could be revisited in the event that Trinh chose to testify.

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State Of Washington, V. Tristan Trinh, (Wash. Ct. App. 2026).

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