The Shawno County Sheriff's department is searching for a suspect following a series of vehicle thefts.
Officials say they occurred between Friday and Sunday in Gresham, Tilleda, and Leopolis.
They attempted to stop a man who they believed to be driving a stolen semi tractor, but he fled the scene.
The suspect is identified as 26 year old Calvin Ossmann.
He's accused of backing into one of the patrol cars during the pursuit, then later struck a tree.
Ossmann then fled on foot.
A search with several departments assisting along with State patrol soon followed, but Ossmann is still at large Monday morning.
No injuries have been reported.
The Shawano County Sheriff's department say Ossmann is 5'11', weighing 170 pounds with brown hair and hazel eyes.
If you have any information, call (715) 526-3111.
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