On Friday October 10, 2025 at 8:33 am, the Sawyer County Sheriff’s Office assisted by the Wisconsin Department of Justice – Division of Criminal Investigations and the Birchwood Police Department arrested Thomas L. Olson, age 30, of Birchwood WI. Olson was arrested in connection with multiple business and residential fires that occurred in the Sawyer County area over the last year.
Olson’s arrest follows a nearly year-long joint investigation into a series of structure fires that began in November of 2024. As a result of the investigation, authorities arrested Olson on multiple felony counts of Arson of Buildings (Wis. Stat §943.02(1)(a)). He is currently being held in the Sawyer County Jail awaiting a bail hearing.
This is an active and ongoing investigation by the Sawyer County Sheriff’s Office and the Wisconsin Department of Justice – Division of Criminal Investigation.
