Mahnomen County (trfnews.i234.me) — Sunshine Lynn Rock, 49, of Mahnomen, is charged in a drug-related DWI case.
The charge followed a traffic stop early Friday.
The case was filed in Mahnomen County District Court.
Case details
Prosecutor File No.: 26000318
Court File No.: 44-CR-26-97
Offense date: February 20, 2026
Rock faces three gross misdemeanor counts and one misdemeanor count.
She is charged with two counts of third-degree DWI.
One count alleges a Schedule I or II controlled substance in her body.
One count alleges impairment by a controlled substance.
Both counts cite an aggravating factor from 2024.
She is also charged with driving after cancellation.
The complaint says the cancellation was “inimical to public safety.”
She is also charged with expired vehicle registration.
What the complaint says
The complaint says a White Earth Police Department officer saw a vehicle leave a residence tied to drug activity.
The stop happened at about 1:28 a.m. on February 20, 2026.
The officer said the registration tabs had expired.
The tabs were listed as expired in November 2024.
The complaint says Rock was driving in the City of Mahnomen.
The officer reported teeth grinding while speaking with her.
The complaint says Rock said she last used drugs on Sunday.
The complaint says the officer checked her driver status.
It came back as cancelled, the complaint says.
Rock was arrested and taken to the sheriff’s office.
Field tests and urine sample
At the sheriff’s office, Rock agreed to field sobriety tests indoors.
The complaint says she first declined due to back pain and the weather.
The officer administered the horizontal gaze nystagmus test, the complaint says.
The complaint notes rapid eye movement.
The complaint also describes a modified Romberg test.
It says Rock estimated 30 seconds in 34.55 seconds.
It says she had eye tremors while counting.
It also says she swayed while counting.
The complaint says Rock admitted to methamphetamine use.
It says she usually snorts a line.
It says her last use was Sunday, February 15.
The complaint says a passenger admitted use earlier that day.
The officer searched the vehicle, the complaint says.
The complaint says the officer found an empty paper bindle.
The complaint says a judge signed a search warrant for a biological sample.
Rock provided a urine sample, the complaint says.
The sample was mailed to the Minnesota BCA for testing.
Prior history noted
The complaint says Rock had a prior impaired-driving-related license loss in 2024.
It also references a pending case, Court File No. 44-CR-24-530.
What readers should know
These charges are allegations.
Rock is presumed innocent in court.
Public case records may be available on Minnesota Court Records Online (MCRO).
Statutes cited include 169A.20, 169A.26, 171.24, and 168.09.
The Minnesota BCA also explains its toxicology and alcohol testing work online.
I’m Chris Harper reporting for TRF News.