Search continuing for Grand Forks Assistant State's Attorney's daughter

(Sidney, MT) -- The search for Grand Forks Assistant State's Attorney Carmell Mattison's daughter is continuing.  

Deputies say 26-year-old Katelynn Berry was last seen December 21st at her home south of Sidney, Montana. Law enforcement found her cell phone at her home on December 29th.  

Berry has no vehicle and authorities are concerned for her safety in the frigid cold. She is five-foot-four with a slender build, green eyes, and dark brown, shoulder-length hair.

Anyone with knowledge of Berry's whereabouts is asked to contact their local law enforcement office, the Richland County Sheriff’s Office at (406) 433-2919, or the Sidney Police Department at (406) 433-2210 with any information.