The Linn County Sheriff's Office and Oregon State Police (OSP) are conducting a death investigation.
On Friday, Linn County detectives learned that OSP received a call at about 7:30 p.m. of a possible drunk driver in a Chevrolet Camero heading northbound on Interstate 5 near the Cottage Grove/Creswell area.
At 8 p.m., an OSP trooper spotted the car going northbound on I-5 near Boston Mill Road in Shedd.
The trooper tried to pull over the vehicle, which fled at speeds in excess of 100 mph, investigators said.
Other troopers deployed spike-strips to stop the car just south of Albany.
After hitting the spike-strips, the car continued northbound on I-5 at varying speeds, detectives said.
The driver eventually drove off the freeway and into a grass shoulder.
After giving numerous verbal commands to the driver, troopers approached the car and discovered him dead from an apparent self-inflicted gunshot wound, investigators said.
The driver was identified as David Van Horn, 41, from Beaverton.
Evidence of drugs and alcohol, along with a gun, were found inside the car, deputies said.
According to detectives, Van Horn had a suspended drivers license, and felony warrants in Washington County for his arrest.
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