Startup man charged with premeditated murder of grandmother’s friend

Tristan Trinh had been arrested for investigation of second-degree murder in Roy Ashmore’s death this month. Ashmore was 39.

Roy Ashmore (Family photo)

Roy Ashmore (Family photo)

STARTUP — The day before he allegedly killed a Sultan man this month, Tristan Trinh’s grandmother wanted police to have him committed for mental health treatment.

On the night of Aug. 5, the grandmother called 911 to report Trinh’s “problematic behavior,” according to charges filed Friday in Snohomish County Superior Court. Trinh had reportedly knocked on her door and exposed himself. The grandmother, 69, resided at a house in the 36700 block of U.S. 2 in Startup. Trinh, 23, lived in a cabin on the property.

Since the grandmother reportedly didn’t describe any immediate safety concerns, Snohomish County sheriff’s deputies found the situation didn’t merit involuntary commitment. They explained how she could get a civil protection order online. Trinh and the grandmother said they would go to bed and stay away from each other.

No more 911 calls came in from that address for the rest of the night, according to court documents.

But on the morning of Aug. 6, Trinh again exposed himself to his grandmother, the charges say. So around 8 a.m., she began filling out a protection order. To help her leave, she called Roy Ashmore, a close friend who had helped her with construction projects. He was going to let her stay at his house.

Around 11 a.m. that morning, Ashmore arrived, according to court papers. He and his young son tried to enter the door to the Haystack Company antique store, which the grandmother owned. Trinh blocked their entrance. A struggle ensued at the doorway.

“Where’s your grandma?” Ashmore reportedly yelled multiple times.

Eventually, Ashmore was able to get inside the antique store. He and Trinh fought, according to court documents. Ashmore repeatedly told Trinh to stop frightening the grandmother. He also told Trinh to leave the property. Ashmore tried to restrain Trinh, but the defendant repeatedly hit him in the head.

Ashmore reportedly asked if Trinh was going to “start being nice.”

“Yeah, yeah, yeah,” Trinh responded, according to court papers.

At that point, the fight stopped. Ashmore hugged the grandmother and told her how sorry he was that she going through this, according to the charges. He said Trinh wouldn’t terrorize her anymore.

Ashmore, his son, the grandmother and another witness moved to the parking lot to discuss what to do next. Meanwhile, Trinh reportedly stood near a dumpster more than 25 feet away. Ashmore wanted to talk to Trinh to get him to leave.

Ashmore approached Trinh, the grandmother reported. Despite Ashmore staying more than 10 feet away, Trinh accused Ashmore of attacking him.

Surveillance video reportedly shows Trinh pulling a .22-caliber Magnum pistol out of his pocket and pointing at Ashmore. A few seconds later, Trinh looks over his shoulder. Ashmore turns around and walks away. Trinh takes a step forward and fires multiple times.

Ashmore’s son was watching, according to the charges.

The son told investigators his father looked at him after being shot, then fell to the ground, court documents say.

Trinh lowered his gun and moved toward Ashmore. At point blank, Trinh shot Ashmore again, prosecutors allege. The Snohomish County Medical Examiner’s Office found Ashmore was shot in the body several times and once in the back of the head. The victim was 39.

Trinh fled, but a witness caught him. The suspect told the witness, “I respect you.” They walked back to the store together to wait for police, according to court papers. The suspect then dropped the pistol in the grass, but wouldn’t move away from it.

Trinh later told police he “had to kill him.” Deputies arrested Trinh for investigation of second-degree murder. But in a report, a detective opined the killing could merit first-degree premeditated murder.

Prosecutors agreed, charging Trinh last week with first-degree murder.

On Tuesday, he remained in the Snohomish County Jail with bail set at $1 million. Court records show he has no criminal history.

Jake Goldstein-Street: 425-339-3439; jake.goldstein-street@heraldnet.com; Twitter: @GoldsteinStreet.

Talk to us

> Give us your news tips.

> Send us a letter to the editor.

> More Herald contact information.

More in Local News

Guests stand around on the balcony at Rosehill Community Center in Mukilteo, Wa. 

 (Blue Rose Photography LLC)
Mukilteo to host open houses for EMS levy

The two open houses are scheduled for October. Voters will decide whether to approve the levy lid lift in November.

Traffic moves along Bowdoin Way past Yost Park on Monday, Aug. 25, 2025 in Edmonds, Washington. (Olivia Vanni / The Herald)
A new online tool could aid in local planning to increase tree coverage

The map, created by Washington Department of Natural Resources and conservation nonprofit American Forests, illustrates tree canopy disparities across the state.

Logo for news use featuring Snohomish County, Washington. 220118
Snohomish PUD preps for more state home electrification funding

The district’s home electrification rebate program distributed over 14,000 appliances last year with Climate Commitment funds.

Logo for news use featuring the municipality of Everett in Snohomish County, Washington. 220118
One person dead in single-vehicle crash on Wednesday in Everett

One man died in a single-vehicle crash early Wednesday morning… Continue reading

A firefighter moves hazard fuel while working on the Bear Gulch fire this summer. Many in the wildland fire community believe the leadership team managing the fire sent crews into an ambush by federal immigration agents. (Facebook/Bear Gulch Fire 2025)
Firefighters question leaders’ role in Washington immigration raid

Wildfire veterans believe top officials on the fire sent their crews into an ambush.

More frequent service coming for Community Transit buses

As part of a regular update to its service hours, the agency will boost the frequencies of its Swift lines and other popular routes.

More than $1 million is available for housing-related programs in Snohomish County, and the Human Services Department is seeking applications. (File photo)
Applicants sought for housing programs in Snohomish County

More than $1 million is available for housing-related programs in… Continue reading

x
Edmonds to host town halls for levy ballot measure

In November, Edmonds residents will vote on a $14.5 million property tax levy lid lift to help address the city’s budget crisis.

South Everett high school hopes to add IB program

Similar to AP classes, International Baccalaureate courses are rigorous with the opportunity for students to earn college credit.

Snohomish County Council recognizes Hispanic Heritage Month

‘Cultural leaders’ celebrated with music, recognition and hope for future generations.

Photo provided by City of Snohomish
An aerial image of the annexation area. SR-9 is on the left side and US-2 can be seen at an angle in the upper right.
Snohomish North Lake annex approved by the city

City staff attempted to address the public’s concerns before voting. Next is a county council public hearing.

Everett
Everett police arrest couple on suspicion of trafficking a minor

Investigators said couple had seven to nine women as young as 13 years old working with them.

Support local journalism

If you value local news, make a gift now to support the trusted journalism you get in The Daily Herald. Donations processed in this system are not tax deductible.