Al Kennedy High School was placed on lockdown and both lanes of traffic were stopped Friday morning after reports of a gunman in the area.
At approximately 9:20 a.m, a gold Mazda pickup was seen driving recklessly before colliding with a commercial vehicle on I-5 near the Saginaw exit.
According to authorities, the man exited the pickup with a firearm and was taken into custody "a short time later."
No outstanding suspects were reported at the time and it is unclear if any shots were fired.
Oregon State Police are asking for witnesses to the incident to come forward.
Witnesses to the incident, collision, or driving behavior of a gold pickup, are asked to contacted the Oregon State Police Northern Command Center at (800) 452-7888.