Yamhill Co. Sheriff's Office
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News Releases
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Missing Dementia Patient Located with Use of YCSO Project Lifesaver Tracking Equipment (Photo) - 12/12/17

This morning, at approximately 9:00 a.m. Yamhill County Deputies, Yamhill County Sheriff's Office Volunteers, and the McMinnville Police Department responded to a report of a missing 60 year old male suffering from dementia. The patient had been last seen at a residential facility the night prior and his whereabouts were unknown. The extremely low temperatures made this situation more dire and emergent.

Because of the dementia related issues, the man was in possession of a "Project Lifesaver" wrist band, which is maintained by the Yamhill County Sheriff's Office. These wrist bands, which are used for dementia and Alzheimer's patients as well as some spectrums of autistic children, emits a radio frequency allowing it to be tracked by YCSO personnel using specialized equipment.

At about 11:30 a.m., after several hours of searching, one of the five YCSO members using a Project Lifesaver locating system began receiving a signal from the wristband. The missing subject was tracked and eventually located near the intersection of 2nd and Davis Streets in McMinnville. The subject was evaluated by medical personnel on scene and transported to the Willamette Valley Medical Center where he was treated for his exposure.

"The Yamhill County Sheriff's Office is one of eight agencies in the State of Oregon involved in the Project Lifesaver Program" said Sheriff Tim Svenson. "Situations like this, which occur in extreme temperatures, really reinforce how accurate the name of the program is. It truly can be a lifesaver".

More information regarding Project Lifesaver can be found at: https://projectlifesaver.org/

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Yamhill County "Shop With a Sheriff" Event Ends Up With Big Smiles (Photo) - 12/11/17

There were many smiles on Sunday, December 10, 2017, when the Yamhill County Sheriff's Office held their second annual Shop with a Sheriff event at the McMinnville Walmart. 67 children shopped with one of the Sheriff's deputies and staff, volunteer group members, or members of sister county law enforcement agencies (Carlton PD, Yamhill PD, and Yamhill County DA's Office) who volunteered their time to attend the event. The children who benefited were identified through the administration of the participating schools - Amity Elementary School, Amity Middle School, Amity High School, Dayton Grade School, Dayton Junior High, Dayton High School, Faulconer-Chapman School, Sheridan High School, Willamina Elementary School, Willamina Middle and High School, Yamhill Carlton Elementary School, Yamhill Carlton Intermediate School, Yamhill Carlton High School, and Wascher Elementary. In addition, this year we were able to extend the program to nearly a dozen children through the Marion Polk Yamhill Foster Parent Association. Each child was given a $100 Walmart gift card to purchase items for their families and from their own wish lists. After shopping, children munched on Subway sandwiches while helpers wrapped presents. There was lots of laughter, lots of joy, and lots of wrapping paper used to hide their special presents for Christmas morning.

"Our deputies and staff, along with volunteers from other county agencies, had a great time. The kids are so excited about being able to buy things for their families, and we enjoy watching their faces light up when we remind them to pick out something for themselves too." said Sheriff Tim Svenson. "A lot of our deputies get into law enforcement because they want to serve their communities. This is a different way of doing that. It was a great way to engage with kids and families that may not have much interaction with us and we got stopped by several shoppers who thanked us for our service -- always a nice bonus for our staff!"

The Yamhill County Sheriff's Office would like to thank the staff of McMinnville Walmart for their assistance in coordinating this event and the McMinnville Subway for their generous donation and assistance with providing the shoppers' meals. In addition, the Sheriff's Office would like to thank our patron-level donors for their generous contributions. Our Deputy Patrons: John Bowen, Dennis and Susan Brown, Gayle Jensen, Betty and Jim McWhorter, John and Mildred Reppeto, and Patrick Rogers; our Sergeant Patrons: John and Lynné Svenson; and our Sheriff Patrons: The Lester Family and Mark and Laura Tschabold. Those who would like to donate to future Shop with a Sheriff events are asked to make checks payable to "Yamhill County Sheriff's Office" and write "Shop with a Sheriff" in the check's memo line. Checks should be mailed to: Yamhill County Sheriff's Office, Attn: Shop with a Sheriff program, 535 NE 5th Street, Room 143, McMinnville, OR 97128. Donations to this program are tax deductible as a charitable contribution, and 100 percent of the money raised goes toward supporting the program; no tax dollars are used for this program.

Update on City of Yamhill Shooting - 11/27/17

Richard Mershon, 67 years of age, was arrested this afternoon on two counts of Attempted Murder, and one count each of Assault in the First Degree, Unlawful Use of a Firearm, Menacing, and Harassment. These charges stem from a shooting incident in the City of Yamhill, of November 24, 2017 at about 9:00pm. Below is a copy of the probable cause statement to be filed with the court along with the District Attorney's Information charging Mr. Mershon as indicated. "Victim two", referred to below is David Trivelpiece, who remains hospitalized. Mershon was released from the hospital today, and immediately taken into custody.

This incident remains under investigation by the Yamhill Police Department and by members of the Yamhill County Major Crime Response Team. Further inquiries should be made to the Yamhill County District Attorney's Office: 503-434-7539.

The probable cause statement, prepared by Yamhill Police Officer Travis Vancleave, reads as follows:

On November 24, 2017 at around 2101 hours I was dispatched to a report of a fight involving a firearm at Zippy's Pizza, located at 180 S Maple Street in Yamhill, Yamhill County, Oregon. The suspect, later identified as Richard R Mershon DOB 02/04/50, was reported to have gotten into an argument that led to the suspect and male victim physically fighting. Male victim stated, during the fight, the suspect fired two to three shots from "about a foot from my chest" and didn't know how he wasn't shot. Two spent 9mm shell casings were later found at the scene.

A second male victim, who was walking across the street with two other males when the first couple shots were fired and ran to help. Another struggle ensued between the second male victim and the suspect, and the second victim sustained a gunshot wound to the left side of his neck and was laying on the ground when I arrived on scene.

When I arrived, I observed the suspect standing next to his vehicle, holding a 9mm semiautomatic pistol in his right hand. Male victim number two was lying motionless on the ground directly next to where the suspect had been standing before turning around to address me. The suspect began walking towards me, holding the firearm out and away from his right side with the barrel pointed towards Olive Street. He was covered in blood and complied with my commands to drop the firearm and then was placed into hand restraints. I later secured the firearm, cleared it and found it loaded with a total of four rounds, three rounds in the magazine and one in the chamber. Male victim number two was transported to OHSU with life threatening injuries.

Male victim number one stated he had witnessed the suspect push a pregnant female who had been trying to help give the suspect a ride home because he was intoxicated. The suspect became aggressive and "just started swinging" when the first male victim intervened and tried to take away the suspect's keys. During the struggle, the suspect was quoted as saying "I'm going to shoot you" to the first victim, removing a firearm from his waist and pointing it at the male victim number one's chest. The first male victim thought he was "dead" and didn't know how he had not been hit when the gun went off. He also added he didn't know why or how he was still alive. Male victim number one stated he heard two shots go off before he fled the scene and then one or two more after he left.

Other witnesses at the scene reported hearing gun shots after victim number two approached the suspect. They told me that victim number two needed medical attention and had been shot by Mershon. After detaining the suspect, I was able to assess victim number two, who was semi-conscious, having difficulty breathing and was semi-alert, asking for help.
As of the date of this report, male victim number two still has a bullet lodged in the spine near his neck and is suffering from paralysis on his left side and limited mobility on his right.

Update on City of Yamhill Shooting Investigation - 11/25/17

From: City of Yamhill Police Chief, Greg Graven, and;
Yamhill County District Attorney, Brad Berry

Re: Update on City of Yamhill shooting investigation


On November 24, 2017 at approximately 9:01 PM, the City of Yamhill Police Department, with the assistance of the Yamhill County Sheriff's office responded to a report of a fight in progress with shots fired at or near 180 South Maple Street in Yamhill, Oregon. Upon arrival, officers encountered 67 year old Richard Mershon who appeared to have suffered a non-life threatening gunshot wound. He was immediately transported for medical treatment. Another adult male, David Trivelpiece, 27 years of age, was also located at the scene and had sustained a life-threatening gunshot wound. At this time, Mr. Trivelpiece is in critical condition. Mr. Mershon is currently in stable condition.

This investigation is ongoing and no other updates are expected today. The City of Yamhill Police Department is investigating this incident with the assistance of the Yamhill County Major Crime Response Team, with members consisting of the Yamhill County District Attorney's Office, the Oregon State Police, the Newberg-Dundee Police Department, the McMinnville Police Department, the Carlton Police Department, and the Yamhill County Sheriff's Office.