A Plymouth man was arrested, after he head-butted an Indiana state trooper.
It happened Thursday night around 10 p.m., just North of Plymouth.
The officer stopped a driver for erratic driving. The passenger, Travis Simpson, 33, told the officer he'd been drinking
The driver was issued a ticket for following too closely.
That's when the state trooper says he noticed marijuana residue on Simpson's shirt, and rolling papers tucked in the car door.
Trooper David Caswell then handcuffed Simpson and was questioning him, when Simpson head-butted him and started to threaten him.
Caswell was treated by medics at the scene.
Simpson later tested a 0.15% blood alcohol level and was taken to the Marshall County Jail.