Daughter of Grand Forks County prosecutor missing

Police are conducting ground and air searches to try and find 26-year-old Katelynn Berry.

26-year-old Katelynn Berry
26-year-old Katelynn Berry<br/>
Submitted Photo

SIDNEY, MT — A ground and air search is underway for 26-year-old Katelynn Berry along the North Dakota and Montana border.

She was last seen Dec. 21 at her home in Sidney, Mont. a city of 6,346 people less than 10 miles west of the North Dakota border.

Police say a text was sent from Berry's phone on Dec. 23. She was reported missing on Dec. 29.

Berry is the daughter of Grand Forks County Assistant State's Attorney Carmell Mattison.

Mattison says the family and police are working under the assumption Berry walked a couple blocks to the nearby truck stop in Sidney as she usually does. Mattison says there is not any evidence of foul play, but it hasn’t been ruled out.


Berry spent most of her life growing up in Grand Forks, but is currently living in Sidney.

Her family became concerned when calls to her cellphone went directly to voicemail.

Police and family say nothing was missing from Berry's home. They found her jacket, cell phone, wallet and other personal belongings.

Police are searching ditches along the walking route between her home and the store.

They have also conducted air searches with drones and planes.

The weather has hampered search efforts as there have been several snowfalls since Berry was last seen.

Life-threatening cold temperatures have prevented mass searches from the public.

If you have heard from Katelynn Berry, you are asked to call the Richland County (MT) Sheriff's Office at 406-433-2919, or the Sidney Police Department at 406-433-2210.

Matt Henson is an Emmy award-winning reporter/photographer/editor for WDAY. Prior to joining WDAY in 2019, Matt was the main anchor at WDAZ in Grand Forks for four years. He was born and raised in the suburbs of Philadelphia and attended college at Lyndon State College in northern Vermont, where he was recognized twice nationally, including first place, by the National Academy for Arts and Science for television production. Matt enjoys being a voice for the little guy. He focuses on crimes and courts and investigative stories. Just as often, he shares tear-jerking stories and stories of accomplishment. Matt enjoys traveling to small towns across North Dakota and Minnesota to share their stories. He can be reached at and at 610-639-9215. When he's not at work (rare) Matt resides in Moorhead and enjoys spending time with his daughter, golfing and attending Bison and Sioux games.
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